Cody, Noviculate works good if its heat treated right , if its raw its some tuff material, I,d save your stone for awhile an practice on some cheap stuff, old bottle bottoms , tv screens window glass if thick enough, some guys even use old toilet tanks. I personally have used some stain glass windows that made beautiful points an old bottles worked good if not to domed, Hope this helps an good knapping, Oh yea you need bandaids for that knapping kit also. Leaks happen especially with glass . Later Bob
