
Gordon, I failed too at impressioning the key. Twice.
The first time I filed the blank to fit the picked lock. I reached the point where I got no more marks and the key turned 180 degrees. I thought the key was ready, locked the padlock and tried to open it with the key, but unfortunately it didn't work.
I thought I filed down too much, so I filled the bittings with solder and tried to impression the closed lock.
I failed again. I think I'll either disassemble the lock by removing the rivets, or I leave it without a key.
And now the good news: after all this practice I can pick it in seconds.
yes both the wrench and the key turn 180 degrees.