steviepeas

So, I undertook an 800c biscuit fire and the only difference I noted was the fired ware was not quite as white as usual for my 1040 fire temperature. No difference in strength, just a shade darker, which must mean something. I then fired a glaze kiln to 1040c,( EW) with some of the glazed 800c biscuit ware and the normal white shade reappeared, no pinholes or any visible crazing. (. I usually mix biscuit and glaze firing at 1040 for efficiency if I don’t have a load full of each.) One other question… I hear the “biscuit high and glaze low “ quote often, but what is the consensus on the temperatures for each of those…. low and high ?

It’s a white body with firing properties from 1040 to 1240. I mainly fire at earthenware except for some hefty stoneware suitable for exterior planters

Yes I thought there might be an issue with burnout, I’ve just looked again at a Japanese potter to make sure I’m not making it up and he was firing at 700c to bisque for some rice bowls with slipped surface !

Thanks for your reply, I was just interested in the pros and cons, obviously it’s cheaper in energy to fire at 800 but I have seen several very successful Japanese potters fire to 800 instead of 1000 which seems to be the norm here. I would fire high, say at 1040 for glazing, I will have to experiment and see what effects transpire.

Assistance please. I have seen potters in Japanese sites firing to 800c, what are the advantages or disadvantages please.

Anyone have any ideas on making a black or white slip or glaze which cracks a little to reveal an under glaze in a contrasting colour? I’ve seen the heavy crackle which is too severe I’m looking for something subtle.