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Solid Investment Burn-Out
Raspero - Saturday, January 5, 2013 - 9:57amburn-out | investment
I use an investment mix of brick dust, plaster, and ludo made from the same. I brush on several coats of a plaster/silica flour mix, reinforced with chopped glass strand, first. It has excellent gas permeability, adequate strength, and renders perfect detail—I am more than pleased with it.