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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Reaction layer
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<blockquote data-quote="Brett Hansen CDT" data-source="post: 64994" data-attributes="member: 3194"><p>Don't use debubblizer. Also, use aluminous oxide to remove the reaction layer. What investment are you using? We have a new ep3000 as well. We get very little reaction layer. We use Microstar's HS investment. We burnout at 1600 degrees F for 40 mins on 100 gm rings and 50 mins on 200 gm rings. On our old ep500 we would get that rough surface you speak of before we turned down the temperature during the pressing about 15 degrees. Your new ep3000 shouldn't need any adjusting if it has been calibrated.</p></blockquote><p></p>
[QUOTE="Brett Hansen CDT, post: 64994, member: 3194"] Don't use debubblizer. Also, use aluminous oxide to remove the reaction layer. What investment are you using? We have a new ep3000 as well. We get very little reaction layer. We use Microstar's HS investment. We burnout at 1600 degrees F for 40 mins on 100 gm rings and 50 mins on 200 gm rings. On our old ep500 we would get that rough surface you speak of before we turned down the temperature during the pressing about 15 degrees. Your new ep3000 shouldn't need any adjusting if it has been calibrated. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Reaction layer
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