i do .....i can keep the bottles from shattering sometimes with a propane torch...i was just wondering if using the oxxymap makes it less likely...all you do is keep the same flame the whole time (don't have to be hot enough to puncture the glass) and work your way around it evenly in a pattern of moving up and down while slowly moving around for about 3 or 4 minutes moving the flame slowly away ...very slowly....pain staking process and if you don't do it right yous tand the risk of getting a million red hot shards on you which is a real pain literally.