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How do you apply kiln wash or glass separator to stainless steel molds such as a bowl? For me, the coating falls off.

Heat the stainless steel mold to 250 degrees F in your kiln, in an oven, or with a hair blow dryer. Then spray on the glass separator using an airbrush or even an inexpensive pesticide sprayer available from a building supply store. Shake the glass separator mixture often, because the particles settle to the bottom quickly.

If you heat the mold with a hair dryer, heat from the outside while you spray on the glass separator inside the mold.

The stainless steel mold shrinks more than the glass during cooling. For this reason do not use a stainless steel mold that has vertical sides, such as a steel cup. The sides must be slanted so that the glass can move upward as the stainless steel mold shrinks during cooling. If the glass is stuck inside the mold during cooling, the glass will break.

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