Was on a master 7052 with schlage C cylinder
that I hadn't been able to pick.
Took me over 2 hours after I finally figured out how to
get marks. Couple of tips...this one was dirty
and I had lubed to try to help picking--not a good idea.
Pullout method worked AFTER I had filed down a little
bit (maybe 1 depth). I wasn't too worried since I had
followed an easier pointer and checked for 0/1 pins.
The tracks from just inserting
the key were easy to confuse with marks from toggling
up and down. Pullout left definite scratches and gouges
that were easy to read.
Use a good 8x loupe and hold up to different lights and
rotate back and forth under the light. Marks show up a lot better
at certain angles.
I was using this:
http://www.bhphotovideo.com/c/product/22290-REG/Horizon_GHZ103_8x_Focusing_Loupe.html
any pointers on getting better speed? I think it's going to
boil down to getting key gauges and filing to the heights.
I'm using a round #4 swiss file.