Do I have to use a devitrification spray when fusing with ARTISTA®?

No. Normally, no devitrification spray is needed, because ARTISTA® is extremely devitrification stable. If, however, certain types of surface phenomenon(s) take place following extreme temperature treatments or when a shelf primer that contains pumice powder is used, one should consider whether or not it might be better to sand blast the surfaces and then melt them again using lower temperatures, because conventional devitrification agents either contain lead or cause a low weathering resistance.

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