I had my Glass Blowing induction a couple of weeks ago, and everyone in my class got to blow glass bubbles as the first exercise. Once it was annealed we were then let loose on the grinders and cutters etc. for decorating. I quenched mine for cracks and sandblasted the inside. The rim needs polishing and a base ground into it yet, but I'm unsure when I can get that done. Its a bit ugly at the moment but it doesn't matter, I'll love it forever!!