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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Emax greyish stains after glaze firing
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<blockquote data-quote="Douglas" data-source="post: 148991" data-attributes="member: 6428"><p>Hey there,</p><p>We have had this issue before. First, I found that firing in a furnace used with your pfm work ( especially base alloy) can cause this. We also use washable stick glue on veneer cases to keep them on the model and this can cause the gray tint if not thoroughly cleaned out before firing. But based on your photons it appears that your pressing furnace or porcelain furnace has contamination. Hope this help.</p></blockquote><p></p>
[QUOTE="Douglas, post: 148991, member: 6428"] Hey there, We have had this issue before. First, I found that firing in a furnace used with your pfm work ( especially base alloy) can cause this. We also use washable stick glue on veneer cases to keep them on the model and this can cause the gray tint if not thoroughly cleaned out before firing. But based on your photons it appears that your pressing furnace or porcelain furnace has contamination. Hope this help. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Emax greyish stains after glaze firing
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