The only REAL paperclip lockpick! by pyrotech
1-40 of 49Next »
Electorials says: Aug 23, 2012. 4:10 AM
Hello,

I tried this and it never works for me :/

If I finally get the nice and tough blue-ish metal, then it's okay for the tip of the lockpick, but after that it goes from blue to yellow and then back to the original metal color. At the position of the yellow part, it's super flexible and bends with the smallest force applied to it.

So it actually gets a lot worse than it would be before trying to harden the metal.

I'm not sure what I'm doing wrong here. I think I need to heat up the whole lockpick instead of just the tip so that there is no 'part that wasn't heated enough' which makes it softer. Is that right?

And I'm doing this with a lighter which I modified to have a large flame.
Could this also be the problem? That it still isn't hot enough?
The paperclip turns red hot; just a little yellowish but not like Really bright.

I don't have a blowtorch; but I do have a gas furnace. Will that be ok to give a try? Or is there anything else I can use?

Are there also paperclips which just won't work? Because I'm thinking some work better than others when doing exactly the same.

PS: Great instructable!

Hope you can help me. Greetings,

Electorials
Biscuitus says: Jun 10, 2012. 12:31 PM
Hardly anyone does water quenching anymore, most do air tempering. In this particular case you can probably get away with it. It won't turn the paperclip into glass, it would probably still take a good amount of force or very sharp movements to break it off and even if it did break, it's easily removable, but that's why you have practice locks, neh? For what it's used for, this process is fine.

Here's an example of air tempering:
Heat A2 tool steel to 1750 degrees for one hour and fifteen minutes to one and a half hours. Remove from oven let cool for eight hours minimum. Heat the part to 600 degrees for thirty minutes then allow to cool. That will give you a Rockwell hardness of about 52 to 60 (that's hard enough that you can't file the metal, you have to use either a honing stone or carbide). If you want to figure out what kind of metal you're using, there are tons of charts that will tell you the exact temp and time you need to get a certain hardness.
Great Wight Ninja says: Jul 17, 2012. 10:31 AM
I presume that would mean you would need a forge or something similar to keep the metal at temperature for those lengthy time periods. Is there a good way to air temper using more general purpose heating sources (like a torch) or is it simply a matter where "if it's worth doing right, it's worth the investment."

If that's the case, water quenching seems like it may still be good for the casual "blacksmith" (and I even use that in quotes loosely), who just wants to dabble once or twice with it and move on to the next kind of project.
Biscuitus says: Jul 17, 2012. 4:36 PM
The gas fired forges I've seen here would do okay, so long as there wasn't a huge temperature fluctuation but most use an electric oven designed for that purpose.

For all intents and purposes, especially for small pieces like this one, yes, water quenching is fine. I was more adding specific information about the process. I've used water quenching for horseshoes almost exclusively and have never had a problem.

Though now that I think about it, you could probably whip up a temporary gas forge with firebricks, some black pipe, a mixing valve and some of those propane torch sized oxy acetylene tanks if you put your mind to it.
4445 says: Mar 15, 2009. 12:30 AM
but putting hot metal in water makes it brittle
chicks dig me says: Jun 12, 2009. 10:34 AM
yes and putting it in hot or warm salt water and cool it down slowly makes it juuuuust right. depending.
Delo97 says: Jul 21, 2011. 7:47 AM
Yay 4 Che!
chicks dig me says: Dec 13, 2011. 2:13 PM
yay
kimro says: Jun 1, 2009. 7:35 AM
yes it dose make it brittle if you get it to hot and quench it to soon. its a balancing act if its to hard it will break in the lock and if its to soft it will bend in the lock (btw)"the katana and other swords in it's family have 2 different grades of steel in the blade a hard steel to keep an edge and a soft steel so the sward wont break on impact"
Janjakko says: Apr 18, 2009. 8:27 AM
putting something really hot into the cold water will set the molecules. If done properly the metal usually turns a solid color, but if done improperly, it will change into a spectrum of colors.
coolboy45 says: Mar 30, 2009. 12:34 PM
not always sometimes it does sometimes it doesn't
SirNoodlehe says: Aug 3, 2011. 8:29 AM
so what do I need the weird stain for?
dll932 says: Jan 25, 2011. 4:07 PM
You wanna play Secret Agent, that's fine, but if you get caught in the wrong place at the wrong time...those will be considered burglar's tools...and you get to hire the lawyer to prove they weren't. After you get out on bond, that is.
Scissorman says: Feb 13, 2011. 3:00 PM
Too true. In the UK it is known as 'going equipped'. Without being in the guild of locksmiths, you're probably best of using these in the safety of you're own home.
TwistedButSane says: May 26, 2010. 3:08 PM
 Would this work just as well with a gas stove top?
PlatypusBiscuit says: Jun 24, 2010. 5:09 PM
I tried it with my stove, and the first time it got softer, but I did it a second time and it worked.
ninja-sam says: Oct 6, 2010. 3:05 PM
the stove doesnt work to well.... there is a technique call tempering. it heats the metal and leave to cool, and then it will get softer, you need speed to do it wiht the stove..
schumacher magic says: Jun 21, 2010. 5:59 AM
it works better if you use a bobby pin and you dont have to do all that reheating
kingmickey says: May 31, 2010. 9:02 PM
 The tempering process all depends on the temperature of the steel right before quenching.  When I do my chisels, I get it red hot, pull it out of the forge, then quickly grind off the black carbon with a grinder.  A rainbow of faint colours will appear, and they will change colour as it starts to cool.  When the tip of the chisel is just starting to get to the yellow end of the spectrum, that's the exact time to drop it in my quenching oil.  Never tried a thin paperclip...


Anarx says: May 17, 2010. 9:29 PM
instead of using just water mix salt, dawn dish soap, and jet dray the ratios i have are for a 5 gallon bucket so i'm not sure on this for small ammounts. just add good amounts of all of it.

this will provide a much better hardening then just using water. this actually adds a bit a of carbon to the steel.

this will probably make it more brittle so be careful not to break your pick off in the lock.


Don,t try this at home says: Aug 24, 2009. 6:08 AM
Do that about 2 times the heat it up again and let it cool so it will be hard and wont brake.
punkhead58 says: Dec 19, 2009. 12:31 PM
On the contrary, multiple temperings (in uncontrolled conditions) will make the steel very brittle and it will crack inside the lock. That is very bad.
nutsandbolts_64 says: Feb 27, 2010. 2:44 AM
here's my idea: temper, quench, temper, quench, temper, let air cool.
beehard44 says: Mar 1, 2010. 2:04 AM
Careful on this. i tried 1 temper-cool cycle, hard! when i did another one i expected it to be harder, but it is more bendy than a regular ppclip
nutsandbolts_64 says: Mar 1, 2010. 4:51 AM
weird, i wonder if the laws of chemistry, thermodynamics or even court-type law apply? 
nutsandbolts_64 says: Mar 1, 2010. 4:51 AM
pun intended
Don,t try this at home says: Dec 19, 2009. 7:31 PM
True but you need to know when to stop not like i do it 20 times so that probably wont happen
fallenspirit123 says: Sep 16, 2009. 5:36 PM
but then it will be very brittle or too soft
Don,t try this at home says: Sep 17, 2009. 4:01 PM
Mine works fine it doesn't bend.
fallenspirit123 says: Sep 17, 2009. 5:48 PM
hmm, well Ill try it then
soilman89 says: Dec 13, 2009. 7:46 AM
 dos it really work

ge7243 says: Aug 28, 2009. 3:50 PM
A nice and to-the-point instructable. I just now tried this with a smaller butane jet lighter (~2.50 USD from Walmart) and I'm rather pleased with the results. But of course I won't know for sure until I give it a try I guess. :D
chicks dig me says: Jun 12, 2009. 10:29 AM
yes, i hate those disclqaimers. its not like youre telling me to rob somebody, and im not a meanie. you should in no way be lyable for any of anybody ealses mistakes
Fast tutorials says: May 8, 2009. 11:56 PM
Where to get tension wrench`?
Bongmaster says: Sep 28, 2008. 1:51 PM
any tips on making a tension wrench? :)
foxtrot4697 says: Oct 14, 2008. 4:28 PM
ummm.... nice pic
Bongmaster says: Oct 15, 2008. 8:53 AM
heh :3
foxtrot4697 says: Oct 23, 2008. 6:40 PM
lolz
corey_caffeine says: Apr 11, 2009. 9:52 PM
*resists /b/tard instincts*
pyrotech (author) says: Sep 28, 2008. 7:42 PM
another instructable is soon to follow
1-40 of 49Next »
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!