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Old 07-11-2019, 10:11 AM
Josh Bernbaum Josh Bernbaum is offline
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Just to report back on this, since having that weird melt with the copper that had a bunch of unmelted snot in it and wasn't at all compatible, I have done one transparent cobalt melt that was mixed with the SP pelletized batch (not the color base). I made sure to clean out the pot as best I could, and that seemed to help and I got a typical nice melt again which was a relief after I had been second-guessing everything. So it seems to me like the Occam's Razor most likely scenario is that the previous phosphate melt I did (mixing with SP) before the problem one with the copper, contributed to the unmelted snot in the subsequent ionic copper melt. And I suppose using too much copper percentage threw off the expansion too much. Living and learning I guess..
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