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Showing results for tags 'sealing'.
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
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?