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 ? 

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 ?