There must be better ways to do this but the dollar store pot i’ve been using to melt doesn’t allow for much precision, so it just gets everywhere and then solidifies within a second or two. With such a short set time, tons of bubbles just under the surface are inevitable, but a pass with a heat gun and a smaller second pour minimizes them – nice thing about sulfur vs. epoxy is if you don’t like how things are going you can always remelt it and try again. Some kind of vibrating table arrangement might reduce the need for a second pass but there was no time to try it for this one. Then just sanding, hours and hours of sanding.