Glass Bottle Cutting Jig

thingiverse

Adapted from a tool I saw in this video:http://www.youtube.com/watch?v=sFXngPx3w3M&t=3m39s It's quite long so I'll try to get the point in my instructions. Clamp a glass cutter into this setup and you'll quickly be able to turn empty wine, beer, etc. bottles into useful things such as drinking glasses. I have an idea for how the top end of wine bottles could be used, so don't go throwing those bits away yet. Kinda building up to something here ;) All the bolts in the diagram are M4x20mm, and there is a 30mm piece of M8 studding holding the 608 bearing in place. Instructions Print and bolt (or glue, melt, whatever) the parts together as per the picture. Fit a bearing of whatever size you like. Clamp a glass cutter in place. Adjust them so that a bottle can easily turn on the two points of contact. Adjust the conical plug so that the cutting wheel is at the height you want to cut away. Turn the bottle through ONE rotation on the blade to make a single small score all the way around. Carefully dribble some hot water over the score line. Dribble some cold water over the score line. Continue to alternate the last two steps until the heat stress drives the fracture through and the bottle comes apart. Sand/grind down any remaining sharp edges.