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Lab talk, the good, the bad, and the ugly
Porcelain
"Reaction Layer" e.max
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<blockquote data-quote="JonB" data-source="post: 65605" data-attributes="member: 3047"><p>Just tried the Zubler Press-Max investment with the Zubler disposable plungers on a couple of "milled" wax-ups.</p><p>I usually use Schein's investment with my emax pressables and burnout at 1600º.</p><p>Zubler says use 1562º</p><p></p><p>We use a WhipMix ProPress 100 and have had good but not great success in controlling the reaction layer. Its the one thing I hate about emax.</p><p>Entry: 1292º</p><p>Heat Rate: 108º</p><p>Final Temp: 1695º</p><p>Hold: 15:00</p><p>Repress: 8:00</p><p>Cool: 0</p><p></p><p>I don't have pics of any done with the Schein investment, but i did catch some after today's Zubler investment. These are directly after divesting with glass beads and then steamed off. Nothing else. To me - they look like about the worst reaction layer I've seen yet! (no pixie dust - just straight up!)</p><p>[ATTACH]2684[/ATTACH][ATTACH]2685[/ATTACH][ATTACH]2686[/ATTACH][ATTACH]2687[/ATTACH][ATTACH]2688[/ATTACH]</p><p>[ATTACH=full]2684[/ATTACH][ATTACH=full]2685[/ATTACH][ATTACH=full]2686[/ATTACH][ATTACH=full]2687[/ATTACH][ATTACH=full]2688[/ATTACH]</p></blockquote><p></p>
[QUOTE="JonB, post: 65605, member: 3047"] Just tried the Zubler Press-Max investment with the Zubler disposable plungers on a couple of "milled" wax-ups. I usually use Schein's investment with my emax pressables and burnout at 1600º. Zubler says use 1562º We use a WhipMix ProPress 100 and have had good but not great success in controlling the reaction layer. Its the one thing I hate about emax. Entry: 1292º Heat Rate: 108º Final Temp: 1695º Hold: 15:00 Repress: 8:00 Cool: 0 I don't have pics of any done with the Schein investment, but i did catch some after today's Zubler investment. These are directly after divesting with glass beads and then steamed off. Nothing else. To me - they look like about the worst reaction layer I've seen yet! (no pixie dust - just straight up!) [ATTACH]2684.vB[/ATTACH][ATTACH]2685.vB[/ATTACH][ATTACH]2686.vB[/ATTACH][ATTACH]2687.vB[/ATTACH][ATTACH]2688.vB[/ATTACH] [ATTACH=full]2684[/ATTACH][ATTACH=full]2685[/ATTACH][ATTACH=full]2686[/ATTACH][ATTACH=full]2687[/ATTACH][ATTACH=full]2688[/ATTACH] [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Porcelain
"Reaction Layer" e.max
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