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As I said in my PM , use a Ti wire, and make sure the scales are very clean. Your cathode may be good size but it may need to be bigger, you'll find out on your next run.

Blue, is not hard to get IME, an oven will work fine. I have done some on the stove top on high and a butane torch as a second source of heat. Another option is electro anodizing where all kinds of...

Looking good.
It can be anodized too if you feel like it. The color choices are plenty.
For me the dream scales would be made from Timascus, but that stuff is crazy expensive.