Slip Settling

[Mossyrock]

Brenda, Have you considered reducing the amount of sodium silicate that you are adding to this recipe? It may be over-deflocculating the slip at 4t per 1000g, which would cause the slip to settle quickly like making a terra sigillata . Adding the epsom salts (very small amount, pre-dissolved) will work by counteracting the overage of sodium silicate...but you could also just cut back on that part from the start. If you need to improve the brushability at that point, look at David Pier's TechnoFile on Binders form Nov 2011 for more info.

 

That much clay in the recipe should hold up that much fledspar and silica no problem. But if you are repelling the clay particles from each other with all the SS, those large pieces will drop to the bottom of the bucket.

--Tina

 

I'll definitely give that a try on my next batch. I didn't even think about what I add after mixing up the dry ingredients. Thanks again!