Correct me if I am wrong, since my days of college industrial work are way in
the past, but I seem to remember bagged powdered additives in the sand to help
the cavity to hold its shape.

CJ Riley

--- pullmanboss <tgmadden@...> wrote:

--- In STMFC@..., ljack70117@... wrote:

When making a sand mold the sand HAD to be wet in order to stick
together around the pattern. Then it would be dried, pattern
removed and the cast done.

Thanks, Larry.

Tom Madden

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