This is all earthenware Judy. Miller #10 by Laguna/Axner. I just mixed up a small batch of glaze using that recipe you gave me. We are going glaze some test tiles and give it a shot. We had put a small batch of test whites in with this load that we fired to 06 with a 30 min hold and the pots look great and the white test like crap. I’m guessing some of the off gassing from these crystal glazes did something funky to them.
I’m not familiar with the Laguna/Axner low fire white earthenware – but sometimes the talc in white earthenware can interfere with glazes – and color response. If you have problems you should get in touch with Laguna — they can advise you on how to tweak the glaze recipe.
They reformulated the clay a couple years ago and #10 is talc free. So is Amaco’s versa clay that we use sometimes. Both are a white body that you can get with or without grog. We use the non grog. We mostly make tile and wedge up the scrap from the slabs we roll for pots. That helps keep the shrinkage consistent just to use the fresh clay from the bags for tile.
The only glaze we are having trouble with these days are whites. Of course that’s what everyone wants for their kitchen tile right now. We are getting results we’re pretty happy with with everything else.
Oh and the clay and glaze companies are about as helpful as a pile of dirt. The blanket response is “you’ll have to test it more”. Laguna did suggest we try bisque firing at 06 instead of 04. The body color is less yellow but more pink.