First - welcome aboard!
Very clever adaptation - and the pricing looks fair (but then again I am no wirehead! SO what do I know )
Your board is the interface between th eUSB and the other Driver boards -- Have I got that right?
What boards are you using from your board to the motors?
Will you also be offering built boards - or just bare board and PICs?
Does Profili2 output in GCode too? Or, just the dxf that you'll work into another CAM program maybe?
I'll keep your ""little shop"" bookmarked for later. And, I'll watch for your build thread.
Cheers - Jim
Experience is the BEST Teacher. Is that why it usually arrives in a shower of sparks, flash of light, loud bang, a cloud of smoke, AND -- a BILL to pay? You usually get it -- just after you need it.