Yossie, hi! Once you get past all the nonsense, that is a REALLY cool technique for making a shim. Thanks.
Here's something which I've been meaning to post here, but kept getting distracted. Are you aware that branches of the organization called TOOOL have been established in various cities around the U.S., including SF. Here is the link;
http://toool.us/
The next meeting in SF is Nov. 20th, at Noisebridge. I had hoped to get down there for it, but that's just not going to be possible this month. Maybe in December.
Toool provides a list of references, including suppliers for equipment. Here is the direct link;
http://elvencraft.com/locksport/
On this list especially note Serepick. They have some cool items, including little handcuff shims which are excellent quality and work great!
Best wishes,
Tom