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Thought I'd share a success story here with my Terra Sigillata recipe. Everything I've ever read says that you need sodium silicate or sodium carbonate but it seems that Tetrasodium EDTA - aka Jet-Dry works as well.

 

3 parts Clay

1 part water

2 teastpoons Jet-Dry

 

I used a small bottle to mix up a test batch as I wasnt sure that it would work at all. Previous attempts at using Calgon were unsuccessful as I read that the old recipe containing phosphates was changed.

 

image9.jpg?w=300&h=300

 

So, if you dont have sodium silicate or sodium phosphate handy you can give this a try and see if it works for you.

 

Full post here - https://dreamsofearth.wordpress.com/2015/05/24/terra-sigillata/

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Oops! I meant to say 1 parts clay 3 parts water. I filled the bottle 3/4 of the way with water and filled up the rest with clay and then left just enough room for 2 teaspoons'ish Jet-Dry.

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