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Found 3 results

  1. I recently read that you can use sodium silicate as a post-firing sealant for raw clay, in the same way that it's used to seal concrete, as "water glass". I use cone 6 porcelain, and I love leaving the bare clay as a design technique, but there's still a good chance that the exposed clay will stain with use - esp coffee and tea. So I am going to try using it to protect against future staining after use, but I wonder if I put it on before the pots go into a luster firing (cone 018), will the sodium silicate molecules bond more completely with the clay body? Will it eventually wear away with use? It doesn't stand to reason that it would burn away, since it's not organic, but will it volatilize? I can't find very much info on this specific use of sodium silicate, either, though I have discovered a mind-blowingly large amount of uses for it in all kinds of industries, as well as just ceramics. Thanks!
  2. The basin for a ceramic fountain I made seeps water from the bottom. When I leave it on a towel, it's damp after a few days. I'm looking for recommendations for how to seal it properly, and for any specific products I could use. Would I have to fire it again?
  3. Hi, we are novices who have just bought a secondhand Firecraft top-loading kiln. When it arrived, the asbestos sealing ring had come unstuck from the lid. The kiln goes up to 1300 C. What kind of glue can we use to stick it back on? T
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