Expandable spray foam....lost foam technique


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Posted by Rob Frink on November 15, 1999 at 19:13:53:

Has anyone tried to use expandable spray foam for a lost foam casting?

For the application that I have in mind, I would like to use it to "glue" some cores in place prior to closing the mold. For the sand casting job at hand, the cores are very difficult to position in the mold. However, they are nicely clamped between the drag and cope once I close everything up. I just need to temporarily hold them in place(with foam) untill the mold is closed.

I've never used foam and I'll be pouring aluminum...any helpful comments?

Thanks a million!


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