Dogrocket wrote:Paperclips make good "trainer" tension wrenches.
I wanted to see if anything could be done to make a decent pick or tension wrench out of a paperclip. They're widely available, cheap and they work in the movies.
Rather then trying a straight bended clip, which makes a pick that's too wide and bends really easily I wanted to see if a little cold forging and changing the profile would help.
1. Straightened the paperclips half way, and squared them off with a hammer and a piece of scrap steel as an anvil,
2. Used a pair of needle-nosed pliers to make a pick like profile (smaller then intended as the hammering will cause the pick to spread wider),
3. Flattened the pick profile and shaft until they were the desired thickness and profile (about twice as wide as normal, half as deep),
4. Tempered the picks with a gas stove and some cold water (not sure this helped at all).
The resulting picks came out alright:

They navigate the key-way better due to the thinner profile, and were a little stronger due to the additional height. I was able to open a few cheap padlocks, but found that even after the additional work even a relatively strong spring is sufficient to bend the picks. I'm going to stick with windshield wiper blades for now.