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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Ivoclar emax Press first attempt - Problems
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<blockquote data-quote="Dosa Zsolt" data-source="post: 321935" data-attributes="member: 11712"><p>This is my 2nd try , here is what I have changed :</p><p>- I positioned the edges of the crown outwards and this time pressed only one element, the other sprue is there just because the book said so</p><p>- I placed the investment in the bornout furnace at room temp and made the whole burnout much longer hold at 400 C for 20 min and at 850 for more 45 min</p><p>- the press program was the same as earlier the own press program for 100g, I had no error this time</p><p>- the final result is much better, much smoother surface but the edges are missing again , although this time I made an extra thich edge prepped with a wide shoulder, see the pics.</p><p>Is there a calibration program only for press function ? Or that adjust only the heating...?I am really out of clues</p></blockquote><p></p>
[QUOTE="Dosa Zsolt, post: 321935, member: 11712"] This is my 2nd try , here is what I have changed : - I positioned the edges of the crown outwards and this time pressed only one element, the other sprue is there just because the book said so - I placed the investment in the bornout furnace at room temp and made the whole burnout much longer hold at 400 C for 20 min and at 850 for more 45 min - the press program was the same as earlier the own press program for 100g, I had no error this time - the final result is much better, much smoother surface but the edges are missing again , although this time I made an extra thich edge prepped with a wide shoulder, see the pics. Is there a calibration program only for press function ? Or that adjust only the heating...?I am really out of clues [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Ivoclar emax Press first attempt - Problems
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