Santoro, as you've had experience with this in the past, is there a guide regarding the token manufacturer's capabilities and process requirements? I'm making some grand assumptions in my artwork - 20 mil border around the perimeter, minimum 2 mil line width, minimum 2 mil spacing between features, etc. I would equate this to the capabilities offered by printed circuit board manufacturers. However, looking at the different token manufacturers' websites, not one of them provides a reasonable tech guide for artwork generation. Seems "call us" is the norm in this industry.
I'll be happy to update artwork to deal with production constraints, but I don't know what those constraints are. For "token" production rates, are we restricted to 3 or 4 or howevermany flat depth levels? I'm guessing that the continuous depth gradient is more costly to reproduce, thus the "coin" rate.