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What causes porosity in PFM ceramics?
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<blockquote data-quote="nzbroadbean" data-source="post: 53126" data-attributes="member: 2348"><p>Thanks for the help. </p><p></p><p>Second day of bench test today. The opaque was done for me so I guess I need to be a little diplomatic. I have enough time to strip it and re-layer it so I guess that will be the go. Otherwise I will spend another two firings sending me ceramic all glassy and round and have a crap discoloured patch.</p><p>Work off the metal surface with AlO2 stones degas properly, lightly removed oxide layer (it will grow further in subsequent firings) mix the opaque to a good consistency and prey to Michael Buble, god of bubbles.</p></blockquote><p></p>
[QUOTE="nzbroadbean, post: 53126, member: 2348"] Thanks for the help. Second day of bench test today. The opaque was done for me so I guess I need to be a little diplomatic. I have enough time to strip it and re-layer it so I guess that will be the go. Otherwise I will spend another two firings sending me ceramic all glassy and round and have a crap discoloured patch. Work off the metal surface with AlO2 stones degas properly, lightly removed oxide layer (it will grow further in subsequent firings) mix the opaque to a good consistency and prey to Michael Buble, god of bubbles. [/QUOTE]
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What causes porosity in PFM ceramics?
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