Shrub and I are just having some fun ;0)

Fair enough,
Yes i have some aircraft aluminimum,
The differances arent much differant to look at or work with, aircraft grade is a little less brittle and more flexible and tends to be in the thinner sizes off the shelf,
It is probably a little softer than normal grade and would not do for shims, as you say though its free material, if you can store it then get it, you can make pick handles from it very nicely and it can also be used for impressioning if correctally prepared,
Padlock shims are a funny tool, they work on cheap/low security padlocks, some medium security padlocks and next to no high security padlocks,
Good quality, sprung steel shims will work on any padlock a shim will work on, pop cans can be made from alloy or tin but most are now alloy, alloy shims will only wok on cheap low security padlocks if you are careful and on some very sloppy worn medium padlocks,
A good material for a shim is the clip from a vhs cassette, have a look through raimundos threads for details on how to make them,
Not everything you see on these videos is as it seems, times are cut down, locks could be fixed, highly practiced locks could be used (hence familiality) etc etc, im not saying any member from here molestes thier clips like that but one thing that instantly springs to mind was one i saw with a bic pen on the bike lock thing, he pushed the pen on the lock and it opened!! he didnt even turn the pen
