I support your endeavors in spirit, we can all secretly wish for a nice goban one day, right? 
I preemptively apologize for the OT, but I figured it doesn’t hurt to ask: We had a discussion a while ago, following this video
about how white stones are made, but nobody seems to be able to find one about how black stones are made. 
If you happen to have come across a relevant video during your journey, I would be eternally grateful.