Database Develop

Story - stupid thing i did at school

ok here it goes....i thought about sharing this story about what i done during a boring physics lesson at school, it sounds quite dangerous, but luckily i am still alive to tell your guyz out there.
I was bored during class when the teacher was explaining facts about an electric socket. The teacher told us many facts about an electrical socket that gives an output of 240 volts and 0.5 amps. And then he said that 0.1 amp can kill someone. Without realizing or caring about what he said, i was dared by my friends to shove a pair of scissors into the socket and turn it on. Once i did it, the whole classroom lights suddenly blew out, and all electrical appliances that run on mains switched off. Sparks then came out of the socket holes and I was laughing.
Luckilly the teacher didnt see me or anyone else appart from my friends. After the physics lesson, everyone said that the whole of the 4th floor had a blackout. And dats the point where i laughed hard
I still dont know why i did that in the first place, although i know it was a stupid thing to do and i could have got myself killed. But all i really know is that i blew up many fuse,

it's described at walking on the edge of committing a darvin

Well, I'm not sure if your teacher is mistaken or you've just remembered it wrongly, but a 0.5A on a 240V is not sufficient to power many things. E.g., the total power of a 240V 0.5A is 120W, that's slightly higher than an old fashion 100W lightbulb. The max plug in UK (which I believe is so in HK) is 13A, that is more than 3000W, which then can be used to power stuff like an iron/heater, which goes around 2000W.
Pluging in the scissors to the socket short circuit it and hence creating a flux high current, blowing/triggering any safety fuse along the way. Since you said the entire floor was blackout, it seems that it only blown/triggered 1 major fuse. Unlikely it will cause multiple blown/triggered fuses.
On the 0.1A killing a person issue, if you consider a person's resistance is 2MOhm (which I think is higher than that), it would take a relatively large 20MV (that is 2x10^7) voltage across, which you can't easily get (if not impossible, consider a high tension cable is probably around 1MV). If you were to get that kind of voltage, the power across would be 0.1x0.1x2MOhm = 20,000W, which would definitely kill someone. Consider the amount shown, I bet it takes less than 0.1A to kill someone. To put into perspective, a Taser gun has a peak (not constant) voltage of 50,000V, which is (consider the 2MOhm assumption) 0.025A.
FYI, in most cases of electric shock cases, the fatal part is usually the duration of the electric shock (i.e. small continuous current flowing, cooking you for 30 minutes) or hurting yourself after a shock (i.e. knock yourself onto the solid ground after a shock).
Anyone fall asleep yet? anyway, whatever you do, don't mess with electricity. Respect it.
p/s: Sorry for the lengthy lecture above.. "occupation sickness".

Alan Chan said:
I still dont know why i did that in the first place, although i know it was a stupid thing to do and i could have got myself killed. But all i really know is that i blew up many fuse,
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Click to collapse
You might want to lay off the pipe. As you can see, there is no good that can come from it.

16 Volts AC straight through the heart can be fatal.
AC requires about 60 mA to cause fibrillation, DC needs 500 mA for the same result. Fibrillation is not always fatal....

get new friends

mikechannon said:
Jees it'll be a merciful release.
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Click to collapse
I have a heart condition and I can assure you from personal experience that fibrillations are far from mercyful

wow, i never knew you guys would be so passionate about what i did. I thought u guyz would growl at me for my stupidity.
Hanmin, you can be my next physics teacher for giving me a very comprehensive lecture , your lecture was easilly understood compared to my crappy science teacher
and yes ultraprimeomega, i think i may need new friends for the sake of my safety and education

Anyone here watching "Myth busters"?
They did a whole episode on throwing electric appliances in to bathtub and measuring the current across the "heart" of a dummy to see if dropping a hairdryer or toaster in the bath can really kill you.

I didn't see that Mythbuster. I guess it should be confirmed? Although there are lost of circumstances influencing the outcome:
-use pure H2O, it hardly conducts
-use non-ionic bath oil (good for the skin too)
-a decent Residual-current device would cut off power before you can even notice it
-a decent low amp fast fuse could be a life saver
-high ionic bath salt makes the water much more conductive than your body
-place the tub on rubber, use PVC water supply and drain pipes

they had to mess with the fuses to get enough current to kill the gel doll before they went off

Rudegar said:
they had to mess with the fuses to get enough current to kill the gel doll before they went off
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Click to collapse
oh, right, a gel doll again... very nice material for ballistics, although I believe they should put bones in it for realistic results.
Arteries, veins and nerves are full of ions giving excellent conductive paths through our body, I doubt if they simulated those in the gel.

I got kicked out of woodwork when i was 13 for tying a pupils tie round a lathe and threatening to turn it on, because he had made a better baseball bat than me, unfortunatly, for him, my friend hit the power button and nearly killed him, we promptly got suspended and moved into sewing as a punishment, with a teacher from hell. My friend who i wont name decided to wire up some gold thread to the mains socket and complained to her(teacher) that the machine was faulty, needless to say when she touched the machine she was electrocuted along with my friend, who was promptly expelled, and i was giving a severe caning, in those days we had no trip switches so the only thing that saved them both was the thin gold thread that blew as well.
Moral of the story is dont mess with electrics, or hang around with nutcases

Maggy said:
oh, right, a gel doll again... very nice material for ballistics, although I believe they should put bones in it for realistic results.
Arteries, veins and nerves are full of ions giving excellent conductive paths through our body, I doubt if they simulated those in the gel.
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Click to collapse
With an heavy insulation on the outer body part (i.e. skin = not very good conductor), not even a gold wire inside the body matters. Further, I suspect that the water and the bathtub plays an important part as well.
First, consider that you throwing an electrical appliance into the water, chances are, the 'Neutral' line will be in the water (together with the dangerous 'Live'). Any current from the live line will eventually find the shortest path to the neutral line, leaving the rest (i.e. probably you) untouched.
Then, consider that the current is increased, hence requiring not only the shortest path to the neutral, but a lot of paths to the neutral as well. As with the Faraday cage theory, electric current will tend to go around an object (i.e. electrons repelling each other), especially a better conducting one (i.e. a car protecting the driver from a lighting strike). As such, in terms of choice, if the current require additional path to go to the neutral, chances are, it will rather go via the water (better conductor, I think) or the steel bath tub (i.e. like the body of a car), than your body.

Hanmin, your whole story sounds fair enough... for laymen.
First of all you're mixing up AC, DC and static behaviour.
Faraday created spectacular shows using extremely high static charges, indeed comparable to a car hit by lightning. If you want to conduct an experiment with a metal bath tub filled with nice warm water and any bath soap, salt or oil struck from the side by lightning, I volunteer to step in.
So, our PC's have metal housing, you'd say, so they're a Faraday cage? Right? Wrong. I've had a computer company near the Dutch coast where thunder and lightning are regular events. I could tell when repairs would come in the next day. Phone, Lan and power wires go straight into the metal cage without making contact with the cage itself. Lightning doesn't even have to strike these wires directly, induction can be fatal for your equipment.
Edison called AC "the killer current" and refused to sell AC. AC can not "flow away" to neutral, it wants to go to earth/ground. As long as the fuse doesn't blow, it delivers as much energy as it can. In a bath tub it will not behave like lightning trying to find the shortest way, but like a cloud, spearding as fast as it can. Remember electrons all have the same negative load so they push each other away. And they are LIGHTning fast.
That's why it's also not a good idea to use a standard vacuum cleaner to clean your PC on the inside: the motor will create a cloud of electrons trying to find a way to ground. The free electrons can move much faster through the cloud of static charged dust particles toward your PCB than the slow air stream moves to the vacuum.
The surface of the dry skin is indeed a bad conductor. But even good enough for ECG using leads with suction cups or stickers. And ECG measures very faint electrical pulses in the heart, even with leads on the hands or feet.
Most people believe that water is a good conductor. But in fact pure water is an almost perfect isolator. And even tap water in most Western societies is so pure that you can hardly split it into hydrogen and oxigen using a fairly safe 12 V DC set up, not without first adding a hand full of salt. Current needs ions to move through a liquid, our bodies are full of ions, tap water has much less.

Niiccceee.. good that my explaination has someone to read it in details. I'm so worried that my stuff will get everyone to sleep. Anyway...
You are right that the induction from a lighting can toast your phone, lan and power line. However, as these lines are not long and straight enough anywhere near the PC, the fatal induction is actually caused by somewhere along the way to your company (e.g. from the phone exchange, along the telephone pole/underground, to your company). Your PC will be safe from lightling if it is disconnection from possible external induction source (e.g. the phone line to the outside world). I'm happy to put myself inside the PC case (if it is big enough) for a lighting strike
Some history lesson for all. Edison called the AC the killer current mainly because of the business competition between the DC and AC business. As Edison has spent a lot of money and effort just to change the public point of view on the safety of electricity, and just as the business is getting some money... this Tesla (I think) guy made AC electricity and business is good (costrofit ratio), due to the fact that AC has a certain edge on long distance transfer (I'll omit the details on this). Hence, Edison is trying very very hard to make AC look dangerous, by killing innocent animals (in some cases, virtually just cook it), and eventually, co-invented the electric chair.
In the view of the danger of DC current, it is a false impression of most people thinking that DC current is safe, mainly because the DC current we normally exposed to are low voltage DC current (e.g. batteries and phone charger). However, in strict AC/DC defination, a lighting strike is a DC current. And, I think a Taser gun uses DC too (you would certainly need to use some form of capasitor to store enough voltage for a shock, using regular batteries), unless the battery use is exceptionally designed for it.
Anyone has a Taser to confirm this? Does it gives out a buzzing sound from low to high frequency when armed some AA batteries operated cameras with powerful flash will have the same buzzing noise, indicating that the capacitor is charging, ready for the flash).
As for your statement of "AC can not 'flow away' to neutral, it wants to go to
earth/ground.", I'm not sure if you really meant "can not", or "not only". Anyway, all AC electric stuff, electrons goes between live/neutral, and does not require the earth/ground to be functional (not safely, at least).
If you remember some electric circuit theory, if caes where you have two parallel line (AC or DC), with one line much lower resistance (i.e. shorter distance between live and neutral) compared to the other (longer distance to 'ground' where 'ground' is not designed to pair with live), majority of the current will go through the lower resistance route and hence current that goes through the high resistance route maybe very well harmless. HOWEVER, there are cases where the current in through the high resistance route is harmful, that are in the cases where the current going through the low resistance route is excessive high. Example, the low:high resistance current ratio may be 100:1. If it takes (say) 1A to be fatal, the other route will need to have 100A (which will have all fuses nuked - e.g. my house has a main fuse of about 80A for both the heater and the cooker). That's what mentioned on my post above around the "consider that the current is increased..." section. And, as for the case with extreme high current, apply the Faraday thing mentioned on your first paragraph.
Take the Taser gun for example. If you were read the user manual, there is a minimal distance requirement between you and the target, due the the fact that the probes triangular trajectory path. Being too close to the target, will cause the probes to be too closely attached, not giving enough muscle area to 'disable' the target. The electron will not spread around (like clouds) through all the muscle, just the shortest route to the other probe (there may be current through other muscles, but too small to be noticeable).
Where in the Western societies are you in now? US? Nice... in the UK, you are/not so lucky, as you dont get very much pure water over the tap. UK is on hardwater, which seemingly adding mineral to the diet, probably in such situation, protect us from electrocution? If you were to be 1+ hours around London, take a bit of tap water, leave it on any surface and leave it for it to evaporate. At the end of the day, you'll get a pile of white powder. Yes, it is this bad.
As for the ECG issue, it goes the same with the low-vs-high resistance route. I'm sure it wont work underwater (dirty water?). However, still, it is a better conductor than many things.

Taser guns use electronics related to those modern tiny switched power adapters. The result in both cases is indeed DC. The physics of the lightning path are very complex, lightning can fork out to lots of places being hit by one strike but in general you're right that DC/static tries to find a short route.
In one of my first messages in this thread I mentioned what DC it takes to kill, so yes, I'm well aware that there is no such thing as "safe electricity".
If you short a capacitor or battery, current flows in one direction, from high potential to low potential till both potentials are equal.
AC doesn't come in batteries or capacitors, it comes from a generator constantly pulling the potential from above neutral to below neutral, 50 or 60 times a second. If you would short circuit the generator itself it would continue to produce electricity as long as it hasn't killed itself. There is no flowing away till both potentials are equal.
I'm a retired computer engineer, but I still do remember Ohm's law, thank you.
In case of the bath tub it means:
we have a fixed voltage (U) of 110 or 220V, depends where you live
we can measure resistance (I) from the device that drops into the water to the feet of the tub, to the tap, to the drain
U=I.R in this case U=I1.R1+I2.R2...InRn
With an 80A fuse, the radio falling on the feet, the tap behind the back and the drain and two tub feet straight under it it seems likely that about 2/3 of 80A, well lets say 50A will strike you, 50 x 110 = 5500W
That should boil the egg if not electrocute it

I WOULD SAY YOU WOULD GET A GREAT SHOCK FROM A TOASTER IN A BATH. If you took a mains plug and put two springs on the live and neutral and inserted this into a bath of water it would generate heat, i know i have boiled a cup of water for tea by this method. so if the electricity didnt kill you you will be boiled like an egg

yeah in some situations i see myth busters as more intertainment then real science
like when they had a rather small boat as an example of titanic pulling people down when it went down
a such a small raft cant compare to titanic in ways of down pull
but they are ok fun
but if they bust a myth dont mean a 100% bust in my book

Maggy said:
...
we have a fixed voltage (U) of 110 or 220V, depends where you live we can measure resistance (I) from the device that drops into the water to the feet of the tub, to the tap, to the drain
U=I.R in this case U=I1.R1+I2.R2...InRn
With an 80A fuse, the radio falling on the feet, the tap behind the back and the drain and two tub feet straight under it it seems likely that about 2/3 of 80A, well lets say 50A will strike you, 50 x 110 = 5500W That should boil the egg if not electrocute it
Click to expand...
Click to collapse
Equations, I like! For the case you've calculated above, you consider that the full 80A is flowing. And weirdly, you seemingly considering that 2/3 flowing through a human body. Lets look at this, at the 50A you mentioned (yes, you are right, 5500W will cook you very well). Consider the worst case of U at 240V, your body will have to have (U/I = R) a resistance of 4.8Ohm, which is weirdly small, dont you think?
As with scousemartin's boil an egg, you will have to consider the large amount of water in the bath tub as oppose to the amount of water you use in boiling the egg (e.g. it would take really long for the water to boil) And, even IF the water has similar rate in raise of temperature, I'm sure the person involved will be pretty quick to jump out of the water (when a toaster hit the tub) before it gets boiling.

Making your Nook Display 90% Fingerprint Free

Stealing this post from androidtablets.net from pbrauer, his exact instructions/quote:
"Making your Display Fingerprint-Free and Smudge-Proof for Nook.
This was originally from me for the ViewSonic G-Tab, but I have done this on both of my Nooks with the same excellent results. While I have not gotten the same kind of vendor endorsement as I got from the VS rep, I don't see why there would be an issue for Nooks, they also use an excellent quality glass screen.
So if you are like me, of the most annoying things about the tablets has nothing to do with its functionality, but has everything to do with its display, specifically the darn fingerprints and smudges! There is now a fix for this, tested by many people including myself, and works an absolute treat at curing at least 90% of the issue.
Not only does it prevent almost all fingerprints and smudges but it also gives your display a super silky sexy feel to it.
How to do it? Rain-X! Follow these directions to a super smooth, clean screen that will last at least a month between applications.
1. Clean your screen using a GOOD microfiber cloth and a little bit of water.
2. Repeat step one at least once! You really really want to have your screen as clean and "out-of-the-box" perfect as you possibly can get it. Check it at multiple angles and light to make sure you have no haze, no smudges, no spots.
3. Apply Rain-X to wet the corner of a clean cotton rag
4. Using a gentle swirling motion, apply the rain-x to the screen. It will bead up at first, but continue to swirl it on for about 20-30 seconds until it starts drying to a uniform hazy coating
5. Wet your microfiber cloth again, getting it damp but not dripping and buff off most of the hazy coat
6. When you have most of the haze removed, switch to the dry end of the microfiber and buff off the rest.
7. Go back to the bright lights and multiple viewing angles to check for missed areas.
Good luck and share your results!"
-- This sounds like a great idea to me.

hmmm may have to try this

That is genius!

I've been doing this for years on nearly all my phones and laptops haven't had a issue yet! Also great to use on your sat dish doesn't help in the big storms but it does help.

Me thinks this is a repost...
http://forum.xda-developers.com/showthread.php?t=894197&highlight=rainx

Aquapel seems to be better than Rain-X (lasts a bit longer under heavy wiper usage). I haven't switched back once I tried it.
Wonder if it would also work in this aspect as well (possibly better too).

I made the mistake one time of confusing Aircraft canopy cleaner/polish for windshield cleaner. However, after 30 minutes of buffing, buffing, and buffing, for six months even the BUGS would slide off that glass. Hmmm, I wonder...

How does this effect the glare?

*Rain-X only sold in America

So, you'll always have Rain-X on your fingertip, getting aborbed into your body and transferred to the food you handle, the contact lenses you put in your eyes, etc?
Also, Rain-X can be a pain to get off once it's on, so doing this may make it almost impossible to put a screen protector on later.
I used to use Rain-X on my windshield until I noticed dangerous visibility problems at night when a streetlight or something would hit at an off-angle. The glare was horrible and I couldn't see a thing.

just did this to my nook and my evo. loving it! the sun is the only light source I haven't tested yet but so far it's SO much better!

Might have to try this on my Nook and my Evo.
*Runs to store to buy Rain X*

Original poster secretly buying up Rain-X's company shares.

Where do you buy this stuff? Do you have to mask the border off before applying?

GrillMouster said:
So, you'll always have Rain-X on your fingertip, getting aborbed into your body and transferred to the food you handle, the contact lenses you put in your eyes, etc?
Also, Rain-X can be a pain to get off once it's on, so doing this may make it almost impossible to put a screen protector on later.
I used to use Rain-X on my windshield until I noticed dangerous visibility problems at night when a streetlight or something would hit at an off-angle. The glare was horrible and I couldn't see a thing.
Click to expand...
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You make a solid point on the chemicals being absorbed... The stuff was never meant to be in constant contact of skin.
I also had very bad visibility at night after using the washer fluid type...

Although I haven't tried this, something else that may work, and maybe safer than Rain-X as far as chemical absorption is shaving cream. This is an old trick I used to do to prevent the bathroom mirror from fogging up when I took a hot shower. I'd smear shaving cream (not gel; it needs to be real shaving cream) on the pre-cleaned mirror. Spread it all around. Let it sit for a while, then buff it off with a cloth.

Wow this worked surprisingly well. I previously tried Klasse AIO (it's a cleaner wax for the car) on it, which made it nice and slippery, but didn't seem to last very long. Rain-X worked amazingly well and also fixed the phantom touch issue that I've been having while playing zenonia 2. I can finally play without turning off and on my screen every so often to fix it. Thanks!

I tried this last night.
I cleaned the screen twice with a lint-free cloth designed for eyeglasses. I used liquid eyeglass cleaner too. I applied the RainX then buffed and buffed until it was clean...
I dunno. It doesn't really appear to make *that* much of a difference. My skin is average in terms of oil.
Maybe I was expecting better results.
Perhaps I'll try the shaving cream approach. Which is better, lime, menthol, or regular? /snark

Jgrimoldy said:
I tried this last night.
I cleaned the screen twice with a lint-free cloth designed for eyeglasses. I used liquid eyeglass cleaner too. I applied the RainX then buffed and buffed until it was clean...
I dunno. It doesn't really appear to make *that* much of a difference. My skin is average in terms of oil.
Maybe I was expecting better results.
Click to expand...
Click to collapse
Just tried this too. I still see some streaking afterwards (although it has been reduced significantly). The biggest difference though seems to be that I can wipe off any streaks with my fingers(!) afterwards.
FYI - You can buy Rain-X outside of the US. I picked mine up at Canadian Tire in Canada.
As for this stuff being absorbed through the skin - perhaps. Although according to the bottle it is only flammable and an eye irritant, so absorbing isn't likely to cause too much harm. And I would hope people are washing their hands before putting in/taking out contacts. There are more serious things that are easily spread by touching your eyes than Rain-X!

GrillMouster said:
Although I haven't tried this, something else that may work, and maybe safer than Rain-X as far as chemical absorption is shaving cream. This is an old trick I used to do to prevent the bathroom mirror from fogging up when I took a hot shower. I'd smear shaving cream (not gel; it needs to be real shaving cream) on the pre-cleaned mirror. Spread it all around. Let it sit for a while, then buff it off with a cloth.
Click to expand...
Click to collapse
Yes! I use the same shaving cream trick on my bathroom mirror as well as my windshield. It keeps my windshield from fogging up and makes it slightly more resistant to fingerprints. So I'm thinking it would probably work well on the nook.

Anyone interested in custom paint jobs?

When i go back to school I'm planning on trying out some custom paint jobs for my nexus 7's back cover. I'm an industrial design student so I've worked extensively with HVLP paint guns priming/painting/clearcoating projects etc.
First i'm going to attempt to change the back cover to a simple white like the nexus 7's from google i/o seeing how it reacts with the primer and paint I'm using. If that works well I might try to smooth the back cover out and experiment with vinyl cutouts/stencils. If anyone has any interesting ideas they'd like me to try/attempt feel free to post and if they turn out well I'd be willing to paint a some xda members back covers
I'll provide updates on the projects in the coming weeks as I head back to school and have access to the studio again.

Would be cool if you can do vid clips or photos to detail the process. I think many here would be interested, including yours truly.

e.mote said:
Would be cool if you can do vid clips or photos to detail the process. I think many here would be interested, including yours truly.
Click to expand...
Click to collapse
Will defiantly detail the process. For anyone interested in doing this here are the basics (pics coming once I get back to school):
I'm basically going to be using the same process i use on my projects. So if anyone is planning on attempting this they can decide, pending whether they have access to these materials/willing to put in the time. This process will work on pretty much anything you want to durably paint if you can find a primer for a material then you can paint it.
Here's a typical outline of what I do for a project in these case I'll apply the instructions for the Nexus 7 cover.
They start out with a dense shaping foam that is roughly shaped to design (not applicable here since the back cover is our "shape")
Create a solid stand for the back cover, I usually use left over scrap wood and mount with some hot glue or double sided masking tape
Apply layer of primer this creates uniform color/texture. This process may be skipped depending on how the cover reacts. I'm going to try and use acetone to strip off the waxy surface on the back cover. If this works depending on the new "raw" surface i will apply a thin coat of PCL Poly Primer thinned out with acetone (if this is applied too thick it may fill in the divots on the back which is one of the reasons i may skip it)
Pending whether or not the primer is necessary it may have to be smoothed with high grit sand paper (400-1000 wet sanding is not necessary)
Application of Automotive Basecoat (NOT SINGLE STAGE PAINT) Paint via HVLP gun or Air Brush an air compressor is necessary. If paint booth is accesible use this to prevent dust on paint job
Allow paint to dry look for paint imperfections, something known as orange peel is common where paint appears rough and textured like an orange. If any imperfections are seen wet sand with 1000 grit sand paper.
After paint is completed clear coat will be applied (must be in a dust free area or spray booth you don't want dust trapped between the paint and clear coat). I'm going to us a flat clear coat because I want to maintain the softer "leather" like appearance. Future paint jobs I may use a glossy clearcoat.
After clear coat dries you will have a durable back cover and a one of a kind nexus 7
I know these directions may seem a little over the top for novice "craftsmen" but this is what is necessary for a quality/durable paint job. I may try to find some rattle can primers and paints for a simpler paint job but i suspect this will not create a durable/quality job.
Materials:
For a quality/ "semi professional" job:
Acetone (nail polish remover) - steal it from your mom or girlfriend or go to home depot and buy a big metal tin
HVLP Gun - You cant get the cheapest of the cheap Amazon has these for sub $20 (may need a regulator if your air compressor doesn't have one)
Air Compressor
Respirator or dust mask
Materials to build a stand
Automotive Basecoat - you can find these at pepboys or other automotive shops they may have a limited assortment I go to a place called FinishMasters they can help you with all your questions and are priced reasonably
Automotive Clearcoat
TIME - applying the primer/paint/clearcoat would take literally less than 5 minutes its drying time that will take a while. intotal this process could probably be done withint 2-3 days
Estimated total $100
this may seem like a large upfront cost but as I mentioned with these materials and method you could paint virtually anything - cars, headphones, guitars, anything you can easily take apart and prime is paintable and in my opinion its a solid skill to learn
Poor Man's method:
Acetone
Spraycan Primer Krylon/Rustoleum
Spray Paint
Clear Coat
Estimated Cost $30
This is risky method for a few resons 1) all brands of products should be the same otherwise there may be strange chemical reactions 2) the benefit of an hvlp gun is you can control an even play of paint. With spray cans the only control you have is the pressure you put on the cans nozzle 3) The quality and "eveness" of paint will not be as good
If anyone is interested in getting theres painted (after I figure out all the ins and outs with my own of course) feel free to PM me I should have mine completed by the end of august(pics will be provided asap) and it will probably be cheaper than going out and buying a bunch of primer and paint spray cans.
Stay Classy XDA I'll update in a few weeks when it is finished

Admittedly a plain idea but I've always thought red would be a good color for a tablet. Also obligatory android green, I'd love that
Sent from my SGS2

Very nice thread. I can't wait to see some results. I would LOVE to try this out, but I'm not ready to do this I don't think lol. I'll keep this thread ready to load.

I've done some similar projects with smart phones and dumb phones in the past, these instructions are pretty much spot on. The only thing would add is that I would have a small moisture filter between your air hose and the paint gun. This will catch moisture that gets past the big water trap coming off your compressor before the air hose, and the moisture that forms internally in the hose.
This plastic and primer needs to be as efficient as possible as the OP stated to allow the most bonding with the least material filling the textured areas. This isn't something the OP missed, he couldn't include all 10000 lil things like this for every environment but I felt it was something that will be needed by people especially who paint in just a regular shop or garage as opposed to a climate and humidity controlled paint booth type environment.
Sent from my Nexus 7 using xda premium
---------- Post added at 07:03 AM ---------- Previous post was at 07:01 AM ----------
F34RDR01D said:
Very nice thread. I can't wait to see some results. I would LOVE to try this out, but I'm not ready to do this I don't think lol. I'll keep this thread ready to load.
Click to expand...
Click to collapse
You can always just buy a couple back covers off eBay when they become available and practice. As long as someone is careful it can be done fine with a rattle can. The OP stressed the prep for a reason and the acetone, the quality in the finished product will depend more on prep than the final coats in my opinion, and a few practice covers will let you get used to the material.
Become zen, one with the plastic, paint with your soul lol
Sent from my Nexus 7 using xda premium

Lol, I actually went straight to ebay to see if there were any spare back covers on sale already.
I wonder if Google would sell them directly if you call their customer service? Probably not until their inventory settles down right?

I'm not sure why, but a light blue could look interesting if the right shade.
But I'd love a white backing like the I/O Nexus 7s

I would take a bright obnoxious neon green back cover. Green's my favorite color haha.
Or maybe a more muted mint green would be nice.. mm
I'd pay (hopefully not more than $30? For $15 or less I wouldnt even hesitate) and send my cover off to you if you end up doing this.

Nippero said:
Lol, I actually went straight to ebay to see if there were any spare back covers on sale already.
I wonder if Google would sell them directly if you call their customer service? Probably not until their inventory settles down right?
Click to expand...
Click to collapse
I would think you could order it as a part from ASUS... Google is not making the tablet, ASUS is. I don't think they have set this up yet though.

Definitely interested in this if you decide to do this. Dont think it will work out very well until replacement back covers become available though
Sent from my SGH-I747 using Tapatalk 2

Great idea OP. Have done a lot of rattle can work on car parts so i'm familar with the prepping process, hadnt really thought about doing the Nexus7 back cover. As previous poster said, best to wait until you can get a spare or two in case you make a mess of it. I would definitely buy a spare back cover if I saw one at a half decent price (in UK).
---------- Post added at 11:53 AM ---------- Previous post was at 11:48 AM ----------
:good:
dangeroid said:
Great idea OP. Have done a lot of rattle can work on car parts so i'm familar with the prepping process, hadnt really thought about doing the Nexus7 back cover. As previous poster said, best to wait until you can get a spare or two in case you make a mess of it. I would definitely buy a spare back cover if I saw one at a half decent price (in UK).
Click to expand...
Click to collapse
Oh and I'm thinking bright Android green too. Or red. :good:

krelvinaz said:
I would think you could order it as a part from ASUS... Google is not making the tablet, ASUS is. I don't think they have set this up yet though.
Click to expand...
Click to collapse
Whoops good point, forgot about that for a moment lol.
And yea considering most places cant even keep the N7 stocked right now, I doubt ASUS would have the time to sell spare parts. For now...

I have a white unit from I/O that I would love to get a new paint job. The stock finish absorbed stains and mine is all messed up now.
Also, because of this I looked into replacement back covers and they seem downright impossible to find.
Sent from my HTC One X using xda premium

check this out
I was looking around for custom paint jobs on phones to see if people are interested in my work this is my phone just painted few days ago: http://forum.xda-developers.com/showthread.php?p=41057186#post41057186 you guys can see some of my work at https://www.facebook.com/TabDesignDivision?ref=tn_tnmn

I'd totally order custom back covers.
Sent from my Motorola XPRT

I m thinking about creating an add on ebay if you are interested, I will give updates about it or we can do it through here, just send me
the cover

Note was Snatched from hands(!) in Chicago yesterday. Any cases w/chains?!

Yep, checking texts and yep, BAM...Snatched and sprint.
Police report or Tracing did nothing.
Anyone know of cases that also have chains?
Thanks

The official Samsung protective case has a slot for a lanyard, but I doubt it'd be strong enough to withstand it being snatched from your hands (or you might be left with a case and no phone)
I think some of the aluminium bumper cases have lanyard slots and they'd be a much safer bet for something like this. If I'm mistaken about the lanyard slot you could also insert one between the headphone port and the 2nd microphone, but that might cause issues with noise cancellation.

I think a lanyard with the official sammy case will stop a snatched and grab.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

we'll have concealed carry here is a few more days, so that will stop some a-hole from stealing your stuff...hard to believe this is the only state in the country where you still cant...

If you have a strong enough lanyard, just find a case that works with it. Make sure it is a tough case and it will be strong enough to stay and not break or at least make the snatcher think it isn't worth it to take one.
------------------------
Sprint Galaxy S3
Whiplashh Rom
Look it up.

wase4711 said:
we'll have concealed carry here is a few more days, so that will stop some a-hole from stealing your stuff...hard to believe this is the only state in the country where you still cant...
Click to expand...
Click to collapse
Yep glock on my butt crack n gerber auto knife in pocket...but if you shoot a fool for that your goin to jail lol,although if its on your hip not concealed and its seen it might detur (sp) somebody trying to rob you....thats f#cked up man sorry

Bit of a sidetrack, but regarding the 'carry a gun' thing, no. Showing a gun on your hip doesn't scare away the really motivated criminals.
It makes you target #1.
And a good video to go along with the info:
Ignore the comments because as usual, on Youtube they're half ignorant and half truthful and half bat-poop insane and half of all phrases using "half" are made up percentages.
This might be a good off-topic conversation so as not to derail the current thread...

That's terrible about your phone getting stolen. Over the weekend I saw this on the news (see link below) about thieves stealing phones and selling them at the mall. I never heard or seen these kiosks before.
http://video.msnbc.msn.com/nightly-news/52009921
I wonder if something like a Sling Grip or Fly Grip would reduce the chances of someone taking the phone out of your hands. It's not full proof, but it could hinder the thief.

wase4711 said:
we'll have concealed carry here is a few more days, so that will stop some a-hole from stealing your stuff...hard to believe this is the only state in the country where you still cant...
Click to expand...
Click to collapse
you cant in MD. there trying to change it but its going to take forever

apallohadas said:
Bit of a sidetrack, but regarding the 'carry a gun' thing, no. Showing a gun on your hip doesn't scare away the really motivated criminals.
It makes you target #1.
And a good video to go along with the info:
Ignore the comments because as usual, on Youtube they're half ignorant and half truthful and half bat-poop insane and half of all phrases using "half" are made up percentages.
This might be a good off-topic conversation so as not to derail the current thread...
Click to expand...
Click to collapse
This video doesn't even talk about the visible presence of a gun being a crime deterrent. Unless you mean concealed carry instead of showing a gun on your hip.
However I do agree with the majority of the points presented.

Going to geek out for a second, but if the perceived reward for the criminal is greater than the perception of the sanction against the act (i.e. getting shot or caught), then the criminal will try to 'get er done' anyway.
In other words, if the person open carrying looks like a target, they will still be a target, but now with a higher priority and more likely to receive a violent opening to the event.
The average Joe doesn't practice with their firearms anywhere near to the level of a soldier or law enforcer. Their retention self defense is minimal along with the very popular Serpa holsters or Uncle Mike's holsters that allow anyone to yank really hard and pull out the weapon.
All that being said, I'm a big fan of concealed carry.

Concealed carry is the dumbest argument for this kind of situation. What would you do? The person snatched it from your hands. A concealed (can't be seen) wouldn't deter the person. You weren't vigilant enough to stop that from happening so you're going to pull your gun and put other innocent people at risk?
And a gun on the hip and can be seen is a bigger danger as far as I'm concerned. One sucker punch and an opportunistic criminal is taking that gun off of you. Another gun on the streets in the wrong hands.
I'm not against guns and all that...I just think some clueless people that watch too much TV think they can go buy a gun and go to the range once a year and all of a sudden are experts on self defense.
I don't know about you, but I don't want to have to kill someone over a cell phone. There's no telling if that person that took off with the phone is carrying either and I don't know about where you live, but here it's usually a group of teens and they could care less about really running half the time. You just have to know to be vigilant when things seem fishy. And if you ride public transportation watch at all stops.

rquinn19 said:
Concealed carry is the dumbest argument for this kind of situation. What would you do? The person snatched it from your hands. A concealed (can't be seen) wouldn't deter the person. You weren't vigilant enough to stop that from happening so you're going to pull your gun and put other innocent people at risk?
And a gun on the hip and can be seen is a bigger danger as far as I'm concerned. One sucker punch and an opportunistic criminal is taking that gun off of you. Another gun on the streets in the wrong hands.
I'm not against guns and all that...I just think some clueless people that watch too much TV think they can go buy a gun and go to the range once a year and all of a sudden are experts on self defense.
I don't know about you, but I don't want to have to kill someone over a cell phone. There's no telling if that person that took off with the phone is carrying either and I don't know about where you live, but here it's usually a group of teens and they could care less about really running half the time. You just have to know to be vigilant when things seem fishy. And if you ride public transportation watch at all stops.
Click to expand...
Click to collapse
+1
Sent from the TermiNOTEr 2!

Say if you were to wear a chain when the thief was snatching your phone, you'd end up injured. Any material thing isnt worth your well being, man......... or woman.
Sent from my GT-N7100 using Tapatalk 2

apallohadas said:
Bit of a sidetrack, but regarding the 'carry a gun' thing, no. Showing a gun on your hip doesn't scare away the really motivated criminals.
It makes you target #1.
And a good video to go along with the info:
Ignore the comments because as usual, on Youtube they're half ignorant and half truthful and half bat-poop insane and half of all phrases using "half" are made up percentages.
This might be a good off-topic conversation so as not to derail the current thread...
Click to expand...
Click to collapse
I cant believe he did so poorly even with all his air soft experience lolol, but who ever said this wont happen cause you are getting a cpl, you dont deserve one. If the theif snachted your phone and ran by time you deployed gun lined up a shot at his back as he ran away from you all yoi would do is put more people at risk
Sent from my SGH-T889 using Tapatalk 2

Sorry, I'm the OP and been ultra busy for days.
Regarding gun carry, I had two of them and didn't stop the snatch and sprinter.
(ok...I'm kind of kidding but I'm a personal trainer, 210pds fit with arms (guns) exposed etc. Stupid joke but....it's all about surprise and speed....and I am (very) fast...a sprinter!
Was a stereotypical 16yr kid, black hoodie, 145 and f a s t! That's his weapon.
I took off but didn't have a chance.
Really crowded sat afternoon in Chicago too... he ran down an alley...I screamed: 'stop him'...guys at the other end of the alley had 5 sec or more to react but just stood dumbfounded and watched him run by. (I guarantEE U, I would have stopped him and enjoyed it, had roles been reversed).
Cop said it's the #1 911 in all of Chicago now.
Easiest $200-$300 to snatch.
Why can't stolen devices be made completely unusable by Samsung/carriers...like completely.
It' d solve the problem.

Nurra said:
Say if you were to wear a chain when the thief was snatching your phone, you'd end up injured. Any material thing isnt worth your well being, man......... or woman.
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
I think the visible chain would be a deterrent....they do size up their victims, and seeing that...would likely have them look elsewhere.
If it didn't, don't think much of an injury would occur.

I'm not joining the carrying the argument. All sides have valid points. Although, I did find the two videos interesting.
As for your case situation, it's hard to say what would work best. Not much if you're just using a cheapy TPU case. If you had something like a Defender, you could cut slots, feed some material, like what is used for dog leashes. On the end, inside the phone, I would super glue it to flat piece of strong plastic or metal. The other end, super glue it to form a loop. The material would maintain comfort. Personally, I think it would get old fast.
As a general rule, to really prevent it, one needs to pay attention to what's going on around them. Obviously, you must have used the phone a bit earlier and the thief saw and followed you, noticed you weren't paying attention. We know the rest
Also, sorry to hear about your phone.

OP: Are you not setup with the Samsung tracking facility? I'm surprised nobody has asked yet?
-- From my N7102

rockky said:
Sorry, I'm the OP and been ultra busy for days.
Regarding gun carry, I had two of them and didn't stop the snatch and sprinter.
(ok...I'm kind of kidding but I'm a personal trainer, 210pds fit with arms (guns) exposed etc. Stupid joke but....it's all about surprise and speed....and I am (very) fast...a sprinter!
Was a stereotypical 16yr kid, black hoodie, 145 and f a s t! That's his weapon.
I took off but didn't have a chance.
Really crowded sat afternoon in Chicago too... he ran down an alley...I screamed: 'stop him'...guys at the other end of the alley had 5 sec or more to react but just stood dumbfounded and watched him run by. (I guarantEE U, I would have stopped him and enjoyed it, had roles been reversed).
Cop said it's the #1 911 in all of Chicago now.
Easiest $200-$300 to snatch.
Why can't stolen devices be made completely unusable by Samsung/carriers...like completely.
It' d solve the problem.
Click to expand...
Click to collapse
If you report a phone as stolen, carriers would blacklist it from their network...of course, this would affect the buyer, not the thief
Sent from my HTCONE using Tapatalk 2

Paleo Diet?

Like a lot of people, Im looking to clean up my lifestyle to be more active and lose weight. I have heard a lot of ketogenic types of diets specially the Paleo Diet which basically means to eat like the caveman (before grains, processed foods etc.) which makes sense since long ago there was no such obesity problems or health issues as today. Anyone heard of tried something like this?
What are your thoughts on this?
Sent from my Moto G GPE

All of those "diets" where you eat a certain way don't work, and some can make you sick. There is no easy trick to diet or lose weight, it takes effort. Those efforts include,
1. Don't eat junk! If you do have like a candy bar once in awhile, that's fine.
2. Watch you calorie intake. The average adult body needs at least 2000 calories a day to live a healthy life, there's a difference between just living and actually being active. For example, if you're active and eat about 3000 calories a day, your body will adjust to that. But if you stop being active, your body will still be adjusted to those 3000 calories.
3. Watch out for the "silent killers," sodium, sugars, syrups. These are easy ways to hold in water weight in the body. This includes soda pops, "lemonades," some juices that are watered down with sugar, and the worst one alcohol.
4. Yes if you want to be healthy you do need to do some type of exercise! Exercise combined with a good diet will speed up your metabolism. Some people seem lucky that they have quick metabolisms. With that though it's either one of two things. Genetics play into it, or they do things like take stairs, or don't take short cuts, or walk fast or hard that helps match the calories they intake without even noticing they do it. If it is genetics, it will at some point slow down.
5. Don't waste time on those meal replacement smoothies and drinks. Those trick your body into thinking you haven't eaten any solid foods, and despite having high calories, your body will still crave solid food! Plus it's not healthy to go on an all liquid diet if you don't need to.
6. Make sure you get the right amount of nutrients and vitamins you need daily. If you don't like fruits, vegis or meat, you can take supplemental pills for your proteins and basic vitamins.
7. If you cut out pre cooked foods and boxed foods with preservatives and all those chemicals that help keep food longer in boxes or safe to eat, that drops a lot of unwanted calories and bad fats. It is more expensive and takes more time to make your food from scratch(such as actually making cheesy hamburger casserole compared to making hamburger helper), but it is a heck of a lot healthier for you.
7. Bottom line, only you can do it. You can have motivation to help you, but you have to want it. If you slip up and eat either junky food, or a higher calorie meal then you better be prepared to match what you ate in calories with exercise.
There's no secret in that. Eat healthy, exercise, and you will in time lose weight and feel healthier.

my brain long for junk food during stressful times. It gets what it wants. Only after the project is done that I'll let discipline return into my life. Anyway listen to vbetts. My weight fluctuates, not good.