I've even used a torch to blow a hole through a small, long necked erlenmeyer flask which i then put a bong bowl through. It was good but not perfect when i went back to improve the hole i had made the glass cracked. Which sucked.
Im going to improve a homemade bong-machine using a plastic bottle and a glass pipe with some very coarse steel wool inside It... if it works I will post a guide 8)
If not, Im going by the vaporstar way :?
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