what is silica flour
Silica flour is simply made by grinding pure silica sand to a very fine powder. It is used as a cheap filler in plaster and some plastics to add strength, or just to reduce the amount of (expensive) resin needed to fill a mold.Order today.ilica flour is simply made by grinding pure silica sand to a very fine powder. It is used as a cheap filler in plaster and some plastics to add strength, or just to reduce the amount of (expensive) resin needed to fill a mold. Order today.