Rex Johnson Posted September 1, 2015 Report Share Posted September 1, 2015 I thought I'd found it in Linda Arbuckle database on a google search uut that's a big database to shuffle thru. Looking for comments and results on this particular. glaze. Interested in how it fires both at ^5 and ^6+. I'm looking for a really shiny black that I can reduce or oxidize. Peter's Metallic Black Gloss ^5-^10 Color: Black / Surface: Gloss Custer feldspar 78.84 Colemanite 10.69 Whiting 5.51 EPK 4.96 Copper carbonate 4.19 Manganese dioxide 4.19 Cobalt carbonate 2.09 Comments: A really great glossy black. Link to comment Share on other sites More sharing options...
Guest JBaymore Posted September 1, 2015 Report Share Posted September 1, 2015 With that level of metallic coloring oxides (over 10%), I'd guess that it is going to precipitate out some micro-crystalline materials onto the surface in any slow cooling.... hence the "metallic" part of the glaze name. It'll almost for sure not be a truly glossy surface if it is slow cooled. Probably look sort of like gunmetal. If it even can be a true gloss surface....... crash cool it. In a hex type electric kiln (low levels of insulation, small thermal mass) the kiln might cool fast enough in it's normal cycle to keep it glossy. Experiment. Also, it is not one I'd personally use on food contact surfaces due to the saturation of coloring oxides. best, .....................john Link to comment Share on other sites More sharing options...
Rex Johnson Posted September 1, 2015 Author Report Share Posted September 1, 2015 Forgot, gas kiln. Mostly for decoration. A high gloss would be desirable, but a metallic finish would be very usable too. I'm looking for an RIO iron red glaze that does the same metallic surface as well... Here's an example from Pine Mills Pottery ( this is wood fired at ^12), I'd like to use black and an RIO glaze together to experiment with... Link to comment Share on other sites More sharing options...
Rex Johnson Posted September 15, 2015 Author Report Share Posted September 15, 2015 Tested and happy with the Pete's Black, gained some luster in production. Report here: http://community.ceramicartsdaily.org/topic/12521-cone-5-glazes-matured-or-not/ Link to comment Share on other sites More sharing options...
Rex Johnson Posted September 15, 2015 Author Report Share Posted September 15, 2015 With that level of metallic coloring oxides (over 10%), I'd guess that it is going to precipitate out some micro-crystalline materials onto the surface in any slow cooling.... hence the "metallic" part of the glaze name. ....john Right about the metallic finish there John. Glossy but has a lustery finish. Cooled fairly slow. Link to comment Share on other sites More sharing options...
Guest JBaymore Posted September 16, 2015 Report Share Posted September 16, 2015 Looks about like what I expected it would. Glad you like it. best, ...................john Link to comment Share on other sites More sharing options...
Mark C. Posted September 16, 2015 Report Share Posted September 16, 2015 Another way to achive a black without all the oversaturation of many colorants is to use about 3-4% cobalt Oxide-this can give you the same effect with less flaws (like bubbles or pits) Mark Link to comment Share on other sites More sharing options...
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