Powder Frit

[Terry Gallentine]

I am ball milling some glass down to use as a frit for fusing and I have a question. I have had a problem with milkiness in my clear powder and I assume that it is because I have not been screening out the extremely fine particles out of powder that I have run through an 80 mesh screen. Does anyone know what the particle size is for most of the commercial frits that are called "powder"?

[Brad Walker]

Bullseye's powder is 0.2mm and smaller, which is what goes through an 80 mesh screen.

[Terry Gallentine]

Thanks Brad. Do you have any ideas of how to get rid of the super fine particles?

[Brad Walker]

My first thought was what was causing them. Wonder if you're pulverizing more than Bullseye does.

As for getting rid of them, I think I would try rinsing the frit before you separate it into sizes.

Alternatively, get a finer mesh screen and try sifting them out. I know that Thompson Enamel will make different size screens.

[Terry Gallentine]

It was my first attempt at ball milling some Easy Melt cullet from Wissmach and I probably did pulverize it too much. I was used to using scrap that I had to quench and stamp to make a gravel before I milled it and that took quite a while to mill down. I will try less time in the mill. I will probably try a wash and rinse of the frit to see if that eliminates most of the super fine particles.
Thanks again Brad