william schran on fri 30 jan 04
I've never had an issue with bloating porcelain, but I have noted
that reclaiming/drying out porcelain trimmings & slop/slurry, areas
of almost dried white powder are found in the clay. Assume this is
feldspar and even with blunging wondering if small unmixed bits in
the body could contribute to bloating?
Bill
Pamela Watkins on fri 30 jan 04
Interesting post William,
I just threw about 20 lbs of reclaim Grolleg into a couple of tea pots and mugs and came across bits of tough dried particles during throwing and after a good wedge. I was wondering where these imposters came from as they were not inferior.
Your words, bloating....I am in vision of swells and soft lumps....are you talking wet, green, or post fire? ~ for my notes.....
Peace,
Pamela
~jaq
william schran wrote:
I've never had an issue with bloating porcelain, but I have noted
that reclaiming/drying out porcelain trimmings & slop/slurry, areas
of almost dried white powder are found in the clay. Assume this is
feldspar and even with blunging wondering if small unmixed bits in
the body could contribute to bloating?
Bill
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william schran on sat 31 jan 04
Pamela wrote:>Your words, bloating....I am in vision of swells and
soft lumps....are you talking wet, green, or post fire? ~ for my
notes.....<
Bloating would happen in the glaze firing/firing to mature/vitrified
clay temperature.
Bill
Ron Roy on sun 1 feb 04
I think Bill may be right - I have seen this before - and I do think the
white bits are feldspar - it certainly would explain what is happening.
RR
>I've never had an issue with bloating porcelain, but I have noted
>that reclaiming/drying out porcelain trimmings & slop/slurry, areas
>of almost dried white powder are found in the clay. Assume this is
>feldspar and even with blunging wondering if small unmixed bits in
>the body could contribute to bloating?
>Bill
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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