When I mocked up a bunch of new mold ideas I’d set the smallest lines to .40mm. I felt that .25mm was too small and .50mm was too big. I was totally guessing by sight and didn’t use anything for reference. .35mm seems a good thickness in my opinion.I took a calipers and measured carefully. Although I was not the one making the artwork I think I am very close. I took this pic for another thread so disregard the river rat chip in the pic. For the new greek mold:
I believe that the distance from the edge of the chip to that outer concentric circle is 1mm
I believe that the thickness of that outer concentric circle is .5mm
and I believe that the thickness of the inner pattern (the greek part) the thickness of the lines are .35mm