Red Iron Oxide Wash Recipe 👉 Brush a couple different oxides on overlapping in areas. Gerstley or Gillespie borate Ferro frits 3110 or 3124 borax or any other flux-based material can be used in combination with colorants to create patinas.

Generally the stronger the oxide wash the more it will bleed through the glaze. 6 red iron oxidedeeper yellow Suede cone 06-04 80 GB 20 bone ash ----- 100 Terra sigillata cone 04 1170 EPK 230 ball clay 7 calgon 14 cups of water Mix all the ingredients and let sit overnight. The chemistry is high alumina from 45 feldspar and 20 kaolin zero silica silica 41 Al 2 O 3SiO 2 ratio and 20 calcium carbonate.
The chemistry is high alumina from 45 feldspar and 20 kaolin zero silica silica 41 Al 2 O 3SiO 2 ratio and 20 calcium carbonate.
The next day decant the middle layer and throw the rest away or put it into the recycling bin. Colorants for patinas can be any carbonate oxide or commercial stain. Mixed up fairly thick then brushed on bisque then wiped off with a damp sponge works from 04 - 6. Generally the stronger the oxide wash the more it will bleed through the glaze.