how to prevent cracking when cutting a glass wine bottle in half?
I was attempting to cut a glass wine bottle in half to make some vases & other stuff. I bought a bottle scoring kit (i think armour brand from Micheals Crafts) The scoring worked OK, i don't think it scored well in a few places, but the tapping portion the kit said to do to seperate the halves didnt work at all. I looked up online & it said about filling the bottle with boiling water then running an ice cube around the score line . . . this worked & split the bottle into 2 pieces as i wanted - only problem is it left a few cracks running vertically from the score line =( I can't use either piece now. Is it just luck & practice makes perfect or is there a way to acheive this without cracking the bottle halves? Any help is much apprecaited!