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Like I said - working at it off and on. But your methods sound more reasonable. I would now go your direction. The way I did it was like 25-30 years ago. John John Rodgers Clayartist and Moldmaker 88'GL VW Bus Driver Chelsea, AL Http://www.moldhaus.com
On 6/22/2011 10:44 AM, Alistair Bell wrote: > A week! Jeez John! A week? > > Easier/faster way is a carbide drill or a diamond drill. > > or > > a brass tube (diameter of hole), with little shallow slots cut on one > end with thin bladed saw. Chuck it up on the drill press, make a dam > with putty around the part of glass you want the hole in, add some > carborundum grit and oil to make a slurry, then (slow speed) bring the > slotted tube down and the combo of the slots and the soft brass will > embed the grit and grind the hole. > > I've used a carbide drill, but I have not used the brass tube method. > > alistair > > > > > On 22-Jun-11, at 8:35 AM, John Rodgers wrote: > >> It works. I ground a round hole through the glass in my aquarium so >> I could run a plastic tube in through the side. I needed a close fit >> for the tube so I could get the sealer to work. I used the eraser >> from an electric erasing tool from the drafting department where I >> worked as the grinding tool. Applied toothpaste as the grinding >> agent, much like lapping compound for lapping valves to the seats in >> the heads. It is a VERY slow process, however. Took me a week of >> working at it off and on. Didn't know of any other way to DRILL a >> hole in glass. Not my invention. I saw the method on some craft show >> on TV. >> >> John >> John Rodgers >> Clayartist and Moldmaker >> 88'GL VW Bus Driver >> Chelsea, AL >> Http://www.moldhaus.com >> >> On 6/22/2011 9:52 AM, Alistair Bell wrote: >>> >>> get away! >>> >>> really? >>> >>> the abrasive in toothpaste is something like calcium carbonate >>> (chalk) , right? >>> >>> or are they adding carborundum to Crest now? >>> >>> :) >>> >>> John, have you done this trick? >>> >>> >>> alistair >>> >>> >>> On 22-Jun-11, at 7:16 AM, John Rodgers wrote: >>> >>>> >>>> BTW - toothpaste applied on the end of a rubber power eraser can be >>>> used to grind a hole in glass, should you ever have the need to do >>>> so. >>>> >>>> John >>> >>> > > |
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