Merry Monk Design on fri 22 jul 05
Thanks very much, Fred, for the detailed instructions. I feel much more assured now and will try this weekend.
Cheers,
Amy Sanford
amy@merrymonkdesign.com
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Paul Borian on tue 13 feb 07
I bought some new SiC kiln shelves that have relief cuts a few inches
long on each edge, and I noticed that my old high alumina shelves with
cracks in them had the cracks in similar location and almost the same
length as the relief cuts in the new shelves. Most of them had been that
way for at least a year or two.
The other thing the new shelves have is a small hole drilled at the end
of each relief cut. So I am thinking that all I need to do to keep some
of the old shelves in good shape is drill a small hole at the end of the
cracks - I had read about this on clayart a long time ago but never
tried it.
So now my question is, I know you use a masonary drill bit but should
you use a hammer drill or a regular drill to do it? I have always used a
hammer drill for things like concrete, etc but I am not sure if the
constant hammering of the bit could cause problems or not. Has anyone
actually done this?
Thanks,
Paul
Ivor and Olive Lewis on thu 15 feb 07
Dear Paul Borian,=20
Be sure that you locate the termination of the crack on both sides. =
Avoid Impact drilling. Use a Diamond drill and copious amounts of water =
to keep the cut cool and avoid pressing downwards.
Wishing you success,
Ivor Lewis.
Redhill,
South Australia.
Snail Scott on sun 18 feb 07
At 11:38 AM 2/13/2007 -0500, you wrote:
>I know you use a masonary drill bit but should
>you use a hammer drill or a regular drill to do it?
Use a regular drill with a masonry bit. A hammer
drill is fine for thick stuff, but it could crack
ceramics, especially things with existing stress
cracks. The shelves will drill readily, no problem.
-Snail
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