Patsi Minnes on sat 16 dec 06
I know there isn't an easy answer, but when the glaze runs and you have to
chisell you pot from the kiln shelf ( fortunately it was the teacher's
glaze and shelf), how does one remove the crud from the bottom of the pot?
Many thanks, Patsi Minnes
John Rodgers on sat 16 dec 06
The first mistake was to separate the pot from the shelf. They should
have been left stuck together, a price tag with a huge price attached,
and then sold as an Abstract Object D'Art! Big bucks, big bucks!
Joking aside, I use grinding wheels and chisels for such problems.
Some times a chisel will clean up a shlf, sometimes not - depends. Then
you have to use a grinding wheel. For the pot I use a Foredom tool - a
very small grinder that works much like a Dremel Tool. I also use s
sheet of drywall sanding paper. It is an open weave material with
corborundom grit glued to it and it will clean up a pot bottom somewhat.
Good luck,
John Rodgers
Chelsea, AL
Patsi Minnes wrote:
> I know there isn't an easy answer, but when the glaze runs and you have to
> chisell you pot from the kiln shelf ( fortunately it was the teacher's
> glaze and shelf), how does one remove the crud from the bottom of the pot?
> Many thanks, Patsi Minnes
>
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Mark Issenberg on sat 16 dec 06
For grinding I like to use my 4" side grinder. I have a masonry blade on it.
It moves at 10,000 rpm. Its a dangerous tool. I used to make wood bowls with
it and I was using 4" chain saw blades on it.
I grind mistakes outside and I ALWAYS wear eye protection and a mask for the
dust. My grinder is a Dewalt and I have a big Sears grinder with a $100
diamond blade on the big jobs.
Mark
Lookout Mountain
William & Susan Schran User on sat 16 dec 06
On 12/16/06 1:13 AM, "Patsi Minnes" wrote:
> when the glaze runs and you have to
> chisell you pot from the kiln shelf ( fortunately it was the teacher's
> glaze and shelf), how does one remove the crud from the bottom of the pot?
At school I have a 6" bench grinder with a 6" green color silicon carbide
grinding wheel on both sides. Easily removes the largest glaze flows and
will also remove the fired clay.
Since we started using Advancer shelves, most glaze drips/flows are removed
with a putty knife and sometimes an angle grinder for the more tenacious
glaze flows.
In my own studio, I have the same set-up.
I do crystalline glazes, so there's always grinding involved with this
process.
I use the bench grinder to remove the "big stuff", then I use a portable
flat-lap machine with diamond disk to even it out and create a nice smooth
surface.
--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Snail Scott on sat 16 dec 06
At 01:13 AM 12/16/2006 -0500, you wrote:
>...when...you have to
>chisell you pot from the kiln shelf...how does one remove the crud from
the bottom of the pot?
Actually, it is a pretty easy answer!
A masonry grinding disc, either in a
bench grinder or in a hand-held angle
grinder, will quickly and neatly remove
shelf chunks, kiln wash, and glaze globs.
-Snail
Linda K. Beasley on sun 17 dec 06
I'm fairly new to ceramics so I don't have the experience to know if this
will work but here is my idea. This might not be the best solution if the
pot is salvagable. But, it would eliminate the need to chisel on and
possibly damage the kiln shelf.
I suggest that the kiln shelf be turned upside down with the pot still
attached. Use posts that will hold the upside down pot about an inch above
a waste piece of bisque ware on the shelf below. Then, heat the kiln just
high enough to remelt the glaze on the pot so it will drop the short
distance onto the waste piece. Once the kiln is cool, throw away the pot
and waste bisque ware. Then, grind any remaining residue from the shelf.
If anyone tries this, I would appreciate knowing whether or not this works.
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