I want to try powder coating Sterling. According to the cure schedule on the powder packet, the item needs 10 minutes at 400F. Now, my question: do you have input about how critical the temperature is? I've checked my toaster/convection oven and it maxes out at 375F. (Apparently, one cannot trust the dial!) I do have a precious metal kiln with electronic controls, but have not checked its accuracy. Perhaps that would be a better way to go.
There were two articles in the Jan. '16 issue of Art Jewelry Magazine about powder coating. The article by Sam Mitchell noted a range of temperature of 300-400F.
If you are familiar with the articles, do you have additional comments about methods and tips?
I have been using Nikolas clear lacquer to coat copper items, and it works well, but is subject to clouding if humidity is high during application. Not to mention that any hard coating like lacquer will chip and crack if the metal is bent or 'beat', so I only use it on small pieces like pendants and beads.
BTW, your engraved bracelets are very cool. Thanks for sharing.
Judy in Kansas, who is harvesting a bucket of tomatoes every other day.