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Lab talk, the good, the bad, and the ugly
Zirconium
White spots
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<blockquote data-quote="Rainbow Machine" data-source="post: 235061" data-attributes="member: 18554"><p>Could also be defects in the puck manufacturer. I've had spots appear as well but only in certain pucks. When I would run a diff zirc in the same oven, using the same beads, no spots would appear. When I would return to the zirc in question, sinter in clean, more expensive beads, I would get the spots again. Sometimes white, sometimes brown. I always used gloves when cutting, finishing, staining in the green state and would never used compressed air. Still had spots. The puck manufacturer kept denying the issue, implying user error. I heard later on through other grapevines that the puck manufacturer in question was getting their pucks made cheaply in China.</p></blockquote><p></p>
[QUOTE="Rainbow Machine, post: 235061, member: 18554"] Could also be defects in the puck manufacturer. I've had spots appear as well but only in certain pucks. When I would run a diff zirc in the same oven, using the same beads, no spots would appear. When I would return to the zirc in question, sinter in clean, more expensive beads, I would get the spots again. Sometimes white, sometimes brown. I always used gloves when cutting, finishing, staining in the green state and would never used compressed air. Still had spots. The puck manufacturer kept denying the issue, implying user error. I heard later on through other grapevines that the puck manufacturer in question was getting their pucks made cheaply in China. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
White spots
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