I never EVER have used a Dremel tool on any marble Galen - get your facts straight before making a fool out of yourself in public!
You have no idea of the incorrect statements you make Galen since I think whatever you say you think is the truth no matter of the facts.
Ever tried to reheat just a spot on a marble of that size? No, I didn't think so because if you did you would have seen it explode because of thermal expansion/shocking.
Maybe you should do a bit of research or practical application using glass first before making your personal FALSE judgments of others.
I wonder what your personal and private agenda is here as this seems to be your common thread bashing others without facts or practical experiences in the areas you choose to speak about. I, for one, am getting tired of it and suggest you take several marble making classes using a torch so you'd have some experience so you wouldn't confuse torching with Dremel usage.