Does anyone have experience in making historical reproductions of 18th C ball molds, and can offer some tips re the process and steps ? I am in the process of making a ball shaped reamer but could stand some advice on that point as well. I have an old reamer that I used to make a mold from a soapstone block a few years ago , and that worked fairly well. The ball produced is pretty good and usable, but the seam is slightly off centre . Still works well though.