Michael Wendt on wed 19 jan 11
Laurie,
I recommend the use of a router speed control set at the
lowest speed
since the chance of a wheel shattering and shredding you
with shrapnel
is all but eliminated at such a low speed.
A silicon Carbide cup wheel used in masonry work is in my
opinion
the best way to grind glaze off kiln shelves and it will
make short work
of soft materials like kiln wash. The cup extends well past
the guard
allowing it to be placed absolutely flat to the shelf.
The cup type can run on a 4" or 4.5" grinder if it has a 5/8
" spindle
and this is so much lighter and easier to handle than the
big heavy 9"
Makita I also have that is my first choice for glaze
grinding.
One further suggestion:
if you grind glaze and kiln wash in the spray booth, dust
can be
minimized. in the studio.
Regards,
Michael Wendt
Laurie wrote:
Sorry, I missed (inadvertently deleted) some of the posts
about using a
grinder on kiln shelves. If anyone is willing to explain
exactly how
one uses a grinder to remove kiln wash from an entire shelf
(including
24" round shelves) , I woud appreciate it. A friend loaned
me her
grinder, and I couldn't figure out how I might use it
without gouging
the shelves .... it had a big guard on it with warnings not
to remove
it, so the only part that could actually touch the shelf
would be the
edge. I resorted to a small power sander, which worked fine
but took an
awfully long time. I'm not "married" to using a grinder, so
any other
suggestions would be welcome.
Thanks,
Laurie Hashizume
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