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slip cast mold for bowl

updated mon 20 mar 06


Jim May on sun 19 mar 06

I have been doing thrown and hand built work but have not tried slip casting.
I want to make duplicates of a soup bowl with cone 6 slip and need advice on
making a mold.
The question is: do I make a one piece mold that just does the outside form
of the bowl, or two piece, forming inside / outside, with a pour hole.
Would a two piece have problems with air entrapment?

All advice welcome.

Thank you, Jim May