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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Emax investments
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<blockquote data-quote="Mike2" data-source="post: 20770" data-attributes="member: 943"><p>Finning is usually a result of too little bench-set time. I had this issue in the past especially with 300g rings, we used 15/1 for 100g rings but the larger rings went 20/3. This is where the first number is the time to set inside the ring(in minutes) and the second is bench set outside the ring. These investments are very similar in composition(all the speed investments) and will usually perform well when used correctly.(not saying you aren't) I would start with bench set, pressure settings on the press and lastly ratios. Good luck and if the problem doesn't go away call the mnfg's or switch investment. Ivoclar will tell you they aren't sure cause it's not their investment, so it will be up to Schein.</p></blockquote><p></p>
[QUOTE="Mike2, post: 20770, member: 943"] Finning is usually a result of too little bench-set time. I had this issue in the past especially with 300g rings, we used 15/1 for 100g rings but the larger rings went 20/3. This is where the first number is the time to set inside the ring(in minutes) and the second is bench set outside the ring. These investments are very similar in composition(all the speed investments) and will usually perform well when used correctly.(not saying you aren't) I would start with bench set, pressure settings on the press and lastly ratios. Good luck and if the problem doesn't go away call the mnfg's or switch investment. Ivoclar will tell you they aren't sure cause it's not their investment, so it will be up to Schein. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Emax investments
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