solidspace Posted July 7, 2011 Report Share Posted July 7, 2011 Anyone out there using glass bonza bongs and accessories? I'm trying to design my own bong out of a glass bottle and need to know the size of the drill hole needs to be to fit bonza stems and grommets. So does anyone know off the top of your head what size hole it needs to be to snuggley fit the rubber grommet??.... or would someone mind getting out there bong and measuring it up for me... cheers Link to comment Share on other sites More sharing options...
Admin Oz Posted July 8, 2011 Admin Report Share Posted July 8, 2011 Hi solidspace for a bonza sized grommet you would need the hole to be 22mm dia Link to comment Share on other sites More sharing options...
solidspace Posted July 8, 2011 Author Report Share Posted July 8, 2011 Hi solidspace for a bonza sized grommet you would need the hole to be 22mm dia Cheers mate...hmmmm you sure about that? 22mm?? seems a little big for my guess. Bonza stems are 12mm right? then I would have guessed to add 3 or 4 mm for the grommet so that gives us 16mm... what u think Link to comment Share on other sites More sharing options...
Samurai Posted July 8, 2011 Report Share Posted July 8, 2011 (edited) yep Oz is smack on..dunno why ya would question itthats how big mine is glass stem 16mm hole in glass bong 21.5 mm so call it 22mmhappy drillin...HM Edited July 8, 2011 by hydgemite Link to comment Share on other sites More sharing options...
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