Suggest a bath for dull charcoal gray crystals

gczop Full Member Posts: 202	Suggest a bath for dull charcoal gray crystals Nov 23, 2015 11:04:33 GMT -6 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by gczop on Nov 23, 2015 11:04:33 GMT -6 Its the copper oxide. The DIY stuff for cleaning copper like boiling in a salt and vinegar solution, or something else, to make it more coppery?
	Last Edit: Sept 17, 2017 10:30:21 GMT -6 by mohawkpiper: image link fix

oliverpiano New Member Posts: 10	Suggest a bath for dull charcoal gray crystals Nov 23, 2015 13:56:44 GMT -6 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by oliverpiano on Nov 23, 2015 13:56:44 GMT -6 I've had similar crystals involving strike firing with CuCo3 glazes but not in the crystal firing. Acid etching might help some. Mike