A possible contributing factor to bubbling is the firing temperature of your first opaque cycle relative to the oxidation cycle temperature. If you are...See more oxidizing the alloy prior to opaquing, even if you then blast off the oxide layer before you apply opaque it is very important that your first opaque...
It's most likely from contamination somewhere in the process of conditioning and opaquing, as I'm sure you realize. Here's what I do to avoid the same...See more thing: First, I use specific finishing/grinding tools for each metal and I don't cross contaminate. When using stones, I only use aluminum oxide. Second,...
I agree with Jeff. It's likely contamination of the metal from finishing stones. We had problems when a stone used for removing oxides from implant cases...See more before polishing was then mistakenly used to finish copings. If any of the metal from the machined gold interface gets into the stone, it can no longer be used for finishing.
If you are using base metal alloys frequently, you may want to look at using some type of furnace purging material. It will help to remove many contaminants...See more that attach themselves to the muffle and thermocouple. You would want to do this weekly if using predominantly base metal alloy. It is always...
According to LMT’s 2013 Dentist Survey, only 26% of survey participants say price was a factor the last time they switched laboratories.
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