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Glazes with oxides made with: ammonia vapor + salt, yogurt and salt, vinegar ammonia and salt, baking soda and salt, plant fertilizer.
Copper sheets oxidized with different substances: ammonia vapor and salt, baking soda and salt, plant fertilizer, vinegar ammonia and salt, yogurt and salt, back side of yogurt and salt
Powdered oxides extracted from the sheets by scratching
Comparison between the colours of the oxides in the glazing and on the sheets
Clay tiles fired with: copper powder, copper powder + glaze, indentation filled with copper powder, copper powder, copper wire, copper wire in glaze
Tiles fired with copper sheet and layers peeled off after firing (x2), oxide print made on tile before firing with oxidized copper sheet, tile fired with copper sheet with all layers on, layer peeled of off tile, oxidized sheet before firing
Engobes from left to right: yogurt-salt oxide, vinegar-ammonia-salt oxide, copper powder
Copper powder oxidized on bisque fired tile
Oxidized and non-oxidized copper powder fired on tile
Yogurt-salt oxide dissolved in water, copper powder in vinegar-ammonia-salt solution, copper sheet soaked in baking soda solution and copper sheet soaked in vinegar-ammonia-salt solution
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