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Lab talk, the good, the bad, and the ugly
Metal
Polishing Argedent 86 yellow gold
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<blockquote data-quote="sixonice" data-source="post: 8528" data-attributes="member: 2"><p>I apologize, I didn't mean zinc oxide - I meant TIN OXIDE for the final buff. I have never used Windex, but I would hesitate because of the ammonia and other chemicals in that stuff that may possibly tarnish the gold. If you have no propylene glycol, just try a couple drops of stain/glaze liquid!! Polishing the high yellow PFM alloys is tough, no question. You have to work with slow speeds, lower pressures and gradually work your way up to a high shine (just like fine sanding wood nice & smooth). The full gold crowns alloys were designed for easy polishing (at least most of them!). A friend of mine bought a polishing set with different colors of rubberized polishers (each has a different hardness to work your way down) from LIncoln I believe. He loves them. Your only other option - if the polishing just WILL NOT work for you - would be choosing another PFM alloy that is still yellow (but paler yellow) with less gold, something in the 74-75% range. Your going to sacrifice some of the yellow color, but you will gain alot of hardness which equals much better polishing. That final product will be easier for you to get out of the lab & be proud of.</p></blockquote><p></p>
[QUOTE="sixonice, post: 8528, member: 2"] I apologize, I didn't mean zinc oxide - I meant TIN OXIDE for the final buff. I have never used Windex, but I would hesitate because of the ammonia and other chemicals in that stuff that may possibly tarnish the gold. If you have no propylene glycol, just try a couple drops of stain/glaze liquid!! Polishing the high yellow PFM alloys is tough, no question. You have to work with slow speeds, lower pressures and gradually work your way up to a high shine (just like fine sanding wood nice & smooth). The full gold crowns alloys were designed for easy polishing (at least most of them!). A friend of mine bought a polishing set with different colors of rubberized polishers (each has a different hardness to work your way down) from LIncoln I believe. He loves them. Your only other option - if the polishing just WILL NOT work for you - would be choosing another PFM alloy that is still yellow (but paler yellow) with less gold, something in the 74-75% range. Your going to sacrifice some of the yellow color, but you will gain alot of hardness which equals much better polishing. That final product will be easier for you to get out of the lab & be proud of. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Metal
Polishing Argedent 86 yellow gold
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