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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