Advancer~R kiln shelves in multi-sided shapes designed for top-loading electric kilns were first introduced in 2003. These thin and lightweight kiln shelves are made from an advanced nitride-bonded silicon carbide composition that is distinguished from conventional nitride-bonded silicon carbide in that it is significantly stronger, thinner and much more resistant to oxidation. Advancer kiln shelves are 19 times stronger and weigh 50% less than conventional 1-in.-thick cordierite kiln shelves. In addition, they are made flat to stay flat so there's no warping, even after many firings under heavy loads.
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