November 2019
How to do Keum Boo on Copper
Posted by Kazuhiko Ichikawa on November 17, 2019 | 4 Comments
Keum Boo on copper is a bit tricky because copper is easily oxidized when it's heated.
So you need to de-oxidize the surface using a torch.
Flame is an excellent reductant.
The preparation is exactly same as the usual Keum Boo but you don't need to do depletion gilding.
The point is brushy falme and de-oxidization by it.
I mean flame has 3 functions in this case.
1. Heating
2. Eliminating oxygen from the oxidized copper.
3. Protecting copper from oxidization.
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