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Lab talk, the good, the bad, and the ugly
Misc
Purging ovens.
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<blockquote data-quote="MrMolar" data-source="post: 338462" data-attributes="member: 25202"><p>so I'll try to offer some advice, but take it for what it is, and don't hold it against me.</p><p></p><p>I ran several cycles of the sintering beads. I never felt like it purged like it should. They always came out like they worked fine, but after the second cycle of crowns, they were green and milky again. </p><p></p><p>I discovered that the milky-ness was coming from the oven being too hot. so I got some calibration tabs and updated my sintering programs according to how hot or cold the oven was based off the tabs. I've since not had an issue with milky crowns.</p><p></p><p>I have had the crowns come out green from contamination and after doing a little googling, I found that on one oven, if I ran it at 1600C for 8 hours, it was perfect, and the other oven has a "periodic maintenance" program on it that runs it about 1600c for several hours as well. I run these cycles at the first of every month and it seems to help with any contaminates that may present themselves in the restoration.</p><p></p><p>I hope this helps, even just a little bit.</p></blockquote><p></p>
[QUOTE="MrMolar, post: 338462, member: 25202"] so I'll try to offer some advice, but take it for what it is, and don't hold it against me. I ran several cycles of the sintering beads. I never felt like it purged like it should. They always came out like they worked fine, but after the second cycle of crowns, they were green and milky again. I discovered that the milky-ness was coming from the oven being too hot. so I got some calibration tabs and updated my sintering programs according to how hot or cold the oven was based off the tabs. I've since not had an issue with milky crowns. I have had the crowns come out green from contamination and after doing a little googling, I found that on one oven, if I ran it at 1600C for 8 hours, it was perfect, and the other oven has a "periodic maintenance" program on it that runs it about 1600c for several hours as well. I run these cycles at the first of every month and it seems to help with any contaminates that may present themselves in the restoration. I hope this helps, even just a little bit. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Misc
Purging ovens.
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