MOLDMAKING, B.C. - People have been making molds for thousands of years, dating back to ancient Egypt and China. Through the years, a variety of materials have been used to make molds including sand, wax, glue, animal fat, gypsum, alginate, metal, plastic, re-usable vinyl, gelatin and others.
TODAY still use a variety of
materials, but a majority uses one of four different
flexible rubber products for the following reasons:
exact detail, 2)
removal (demold) from the original model
and the cast piece, 3)
give long life, allowing for multiple
reproductions and 4)
generally yield many reproductions, which also makes
rubber products are latex,
few paragraphs review these common mold rubbers along
with advantages/disadvantages of each.