When visiting Montreal recently I met with a bunch of Locksport guys.
I entered a draw for some lockpicks and ended up with a heavy box of cut keys.
It had Yale, Schlage, Weiser, Dexter etc keys that have already been cut for use as regular door keys.
I am assuming that cut keys can be made into workable bumpkeys. The existing cuts might even help with placing the new cuts
when cutting to the bumpkey depths.
Having a number of blanks to work with means we can experiment at no cost (except our time)with cuts to the shoulder,depths of cuts and cuts on the tip of the key.
I also want to experiment with springs and dampeners to see just how good a bumpkey opener can be made.
If someone has a key machine and knows how to create bumpkeys I was thinking about trying to make a deal where you would get
some key blanks ( number to be discussed) and you would send me one working optimized bumpkey with springs and dampeners.