synj00 Posted May 25, 2015 Report Share Posted May 25, 2015 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. 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/ Link to comment Share on other sites More sharing options...
Marcia Selsor Posted May 25, 2015 Report Share Posted May 25, 2015 Old calgon worked but the phosphates were removed and it change. For a while it was available it Europe. I just use darvon 7. But Jet Dry is good to know about. Thanks for posting. Marcia Link to comment Share on other sites More sharing options...
PeterH Posted May 25, 2015 Report Share Posted May 25, 2015 Purely for the record, sodium hexametaphosphate is still available (at least in the UK). AFAIK it's usually sold for niche applications such as dyeing. http://tinyurl.com/pq2x5jy It's also listed on the US ebay. Link to comment Share on other sites More sharing options...
synj00 Posted May 26, 2015 Author Report Share Posted May 26, 2015 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. Link to comment Share on other sites More sharing options...
oldlady Posted May 27, 2015 Report Share Posted May 27, 2015 synj00, that is what that little word "edit" at the bottom of your post will allow you to do, correct the original post. i love "edit". Link to comment Share on other sites More sharing options...
Chantay Posted May 27, 2015 Report Share Posted May 27, 2015 Marcie, would you share your receipe using the Darvan? Link to comment Share on other sites More sharing options...
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