drill glass?
Answers:
To drill a hole in a piece of flat glass with a diamond tipped drill bit ( use a "core bit" which has a hole in the center; its not a solid bit like a drill bit used for wood or metal ) use a leather washer with a bead of water in the center opening over where the hole is to be drilled ; this will allow for cooling and prevent the drill bit from wearing out prematurely. The washer does not necessarily have to be leather; it needs to be flexible enough to provide a means by which the water will stay long enough to get the work done. It is important to know that you are actually grinding the hole not drilling it. It is not like you would drill in a piece of wood or steel. Drill (grind) very very slowly with light pressure and only about halfway through the thickness of the glass ; ( use a drill press to do this at a fairly low rpm setting ( 300 - 400 rpm ). A standard drill press is what I have used set on the middle speed pulley) then turn the piece over and drill (grind) the rest of the way through on the other side. Use the - water in the middle - technique on the other side also of course. The holes on both sides must match up as closely as possible to prevent the glass from cracking. The glass must be supported by a surface that is absolutely FLAT AND LEVEL. By drilling (grinding) in this way you avoid cracking the glass when the drill bit breaks through on the other side. This works for flat glass.( I cannot tell you about jars, or plates,or decorative glass ornaments,etc. This technique may not be practical and I have not tried it on any of these. ) The pressure used to grind must be light pressure no more than 10 pounds at the point of contact of the working surfaces of the bit and the material being drilled; but this will vary and the most important part of the process is the feel of the drill grinding and moving very slowly through the glass. Don't try to drill it like wood or metal, you will break the glass for sure. More pressure will only wear out the bit faster and increase the likelyhood of cracking the glass. Be very patient and don't try to rush the job. Fifteen to twenty minutes of drilling on a 1/8 inch thick piece of glass is not uncommon. Try many scrap pieces first, if you have them, to get the feel of it. It took me many weeks to get to the point where I could drill holes in glass.
Other answers:
dowell pin
granular abrasive or abrasive paper/cloth
water or oil
dowell pin
granular abrasive or abrasive paper/cloth
water or oil
Diamond glass drill bit, blue cutting fluid (I think mobil makes it)Very low rpms and .015 feed speed.
yup, go to home depot, in the power tools, ask the guy in there.
i just use a sandblaster alot faster and less chance of breakage