by GWiens2001 » 18 Oct 2012 22:54
Thought I'd update this. Impressioned a key for this Falcon. It impressioned for the change key. That looked pretty familiar from my estimates of bittings taken from the cylinder when picked to the control position, except for the sixth bitting, near the bow. (I hear the Best IC locks are numbered from the blade end, not the bow end, due to the stop cut in the bottom of the key.). The sixth bitting looked much lower when picked to the control position.
Deciding to take a chance, I filed another blank with all the other bittings the same as the change key, and lowered the sixth bitting to what I had measured when picked to the control position. Tested it, and voila... It opened to the control position!
So the two keys only differ in the one (sixth) bitting. Since the deeper bitting is the control position, that explains why I could pick the control shear line and never the operating shear.
Knowing this, I used a second pick to hold up that pin stack above the control position while I picked the previous pin in the binding order. Results, I could pick the operating shear!
Gordon
Just when you finally think you have learned it all, that is when you learn that you don't know anything yet.