Glaze Mixing Ques.

Don't you hate when your husband ask silly question? Who is he to question your teacher? :-)

Truth is, there is no reason you have to do this. Sitting over night may change the glaze consistancy and viscosity if the materials used are somewhat soluble (e.g. gerstley borate), but there is no rule that you have let glazes sit overnight. Mix the glaze well and sieve, and it should be fine to use immediately.

deg

Bet that's is due to some of the materials being somewhat soluble. As the glaze dries, the soluble migrate to the surface - especially edges.

deg

I am one of those people that like to let the glaze sit over night. I usely measure the specific gravity of my glazes right after mixing them as with some glazes it changes enough over night for me to make an adjustment to the sp. I guess it depends on how fussey one is about the consistancy. I do a lot of layering of glazes and I want control on the thickness of the glaze. I also like to make sure I don't have too much floculation. Sometimes if I add something to decrease the floculation it takes some time to take effect minutes, hours or overnight I am not sure.

Bruce Michaels