Talcum powder in resin | YBW Forum
Apr 10, 2012· Yes talcum powder and calcium carbonate are used as fillers for polyester resin. I thin that the talcum we used to use, came from Norway and was ground up rock, and probably not as fine as the pharmaceutical grades, with or without perfume. I seem to remember that both products were coated with 1% calcium stearate ( soap to you) to make the ...