Katarina
from
Sweden
asks
Hi, I'm wondering if this sand could be used to rest (porcelain) pieces on the kiln shelf when fired to around 1240°C? To help pieces move as they contract and also to support rounded pieces as when fired.
Or is there another product better suited for that?
Thanks,
Katarina
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Scarva Replies:
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This would work but alumina hydrate would work better especially for porcelain as the alumina is much finer, hope this helps.
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simon
from
Ireland
asks
hi I'm looking at a bisque slip recipe that has epk , pot ash feldspar and silica ,, is this silica sand suitable ?
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Scarva Replies:
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For the silica you would be best using quartz or flint.
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David
from
United Kingdom
asks
Hi, I've been pursuing ceramics for about a year.. I'm interested in making a "Floating Blue" glaze, a la ceramic arts daily. Recipe I have calls for 20% 325 mesh silica.
I assume this means very fine powder, such as passes though a 325 mesh screen, no?
Can you supply this, or advise about it?
Do you think I could buy your "medium" silica and grind it in a coffee grinder or mortar?
With thanks,
David
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Scarva Replies:
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You require Flint or Quartz to use in any glaze recipe.
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RM1507
