My oven seems to fluctuate when it gets up around the 400 degree mark. Plus or minus 25 degrees in not uncommon. While I don't think this is a real issue for baking the PC it is still a bit bothersome. I've taken Smokes advice and extended the bake time from 10 to 16 minutes to compensate for the temp changes. The problem I've incurred is that soft lead, 8 to 9 BHN, will slag at these higher temperatures if not constantly monitored.
Several paints, Specifically RAL paints, have a lower cure temp of 340 to 350 degrees. 10 minutes is still the recommended bake time. My oven will hold these temperatures without issue for hours. A lower temp would hopefully alleviate the slagging issues with the softer lead alloys. So here's the question...Do low cure paints work with the same effectiveness as those that bake at higher temperatures?