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re - mica

updated wed 5 jul 00

 

Anne Novak on mon 3 jul 00


Industrial Formulators of Canada Ltd. sells mica flakes, at least they =
did a couple of years ago. Their address is 3824 William, Burnaby, B.C. =
Canada, (sorry, I don't know the Postal Code) and their phone number is =
(604) 294-6315.=20

I think that if you bought a bag of vermiculite from a garden supply =
store, and broke it up into flakes (a blender would work for small =
amounts) you would get the same result. You could add these to your =
clay, and I believe you would get increased thermal shock resistance, as =
well as that beautiful shimmery appearance. If you are only concerned =
with the appearance of the surface I would suggest coating the pot with =
a micaceous slip.

Many of my pit fired and sawdust smoked pots are coated with the =
following terra sigillata:
10.5 pounds Old Mine #4 Ball clay
3 gallons water
48 grams lye
Mix well. Let stand at least 24 hours. Siphon off the top, discarding =
the sediment which settled to the bottom. Paint onto dry greenware. =
Polish with a chamois while still damp. Fire up to Cone 05. (Any higher =
and it loses shine.)=20

This fires white but can be coloured with Mason stains, without too =
great a loss of shine. I see no reason why Mica couldn't be added to it. =
Maybe someone else out there has some knowledge about this?
. =20