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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Help, new to pressing
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<blockquote data-quote="TheLabGuy" data-source="post: 338712" data-attributes="member: 126"><p>Psi set too high, should be 67psi (might even have to go a little lower). Also, you are running too hot (reduce final temp),you're boiling your e.max instead of pressing it. Your final temp for e.max ingots will be different than LiSi. Also, I usually only press with whipmix formula one investment in 100 gram rings. If you have to do 200 gram rings, only had success using speed investment by ivoclar. Also, your hold times change a lot between 100 gram and 200 gram rings. (100 gram hold time 10 mins, 200 gram 25mins).</p></blockquote><p></p>
[QUOTE="TheLabGuy, post: 338712, member: 126"] Psi set too high, should be 67psi (might even have to go a little lower). Also, you are running too hot (reduce final temp),you're boiling your e.max instead of pressing it. Your final temp for e.max ingots will be different than LiSi. Also, I usually only press with whipmix formula one investment in 100 gram rings. If you have to do 200 gram rings, only had success using speed investment by ivoclar. Also, your hold times change a lot between 100 gram and 200 gram rings. (100 gram hold time 10 mins, 200 gram 25mins). [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Help, new to pressing
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