i have found a very special, LONG ASS TIME style of drilling into glass bottles that keeps them from breaking too much. They dont shatter, but the hole can get too big. To solve the problem, i put......nice try, i cant give away my secret that easily. BUT, i can tell you that i can drill a hole, and insert a 12mm slide, then seal it into the hole. The slide is replacable if you break it.
Spinks
'I step into another level when i smoke that herb, style is everything, gotta be mooth.' -Tanner Hall