Grimmer on fri 26 dec 97
Mark Issenberg wrote:
> Hi everyone, What is Velvacast? I have 50 lbs. of it. A friend gave me
> container from Geo. Kaolin years ago and I that it was E.P.K. but when I
> opended the top a small tag said Velvacast, Happy Holidays from the hot
> and HUMID south Mark in Miami
Mark,
Velvacast is a water-washed, delaminated kaolin. I'm not clear on what
the process is, but the clay is really white and not plastic. It's commonly
used in casting bodies with Tile 6 or Sapphire kaolin to cut plasticity and
improve whiteness and casting properties. Several domestic throwing
porcelain compositions call for Tile 6 and Velvacast or Kaopaque
(similar product) in a ratio of 33.5:16.5 as the clay component.
steve grimmer
marion illinois
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