I vacuum cast very larges pieces of pottery that weight anywhere
between 30 and 40 ounces. The top of the piece is a sculpture.
Fire scale on the sculpture can be a killer. There is no way I can
polish fire scale off all the areas of the sculpture.
I needed to buy silver for my latest creation so I went to my Rio
Grande catalog. I noticed they have quite a section of argentium
silver so I compared the cost of casting grain for each. 50 ounces of
argentium silver costs $2.00 more per ounce then sterling silver.
It does not make sense to me to pay $60 to $80 more for silver to
prevent fire scale especially when my anti fire scale vacuum casting
process prevents fire scale on my castings.
If you vacuum cast you might check out the simple anti fire scale
vacuum casting process at:
Lee Epperson