Glass frit comes in 4 different sizes: powder, fine, medium, and coarse. I do not use powder as it is too easy to breathe into your lungs (respirator required). Also, the size will vary from one company to the next. One medium may equal someone else's coarse. You will have to experiment. Try to buy only 2 or 4 ounces the first time as a one lb. jar is going to last a long time; and if you are like me, you will want several different colors. The Warm Glass website has small jars in all sizes and colors. Also note that frit comes in both transparent and opaque. They have a very different look when fired. I usually mix the 2 together, as I did in the above photo.
- 300 degrees per hr to 1000 - hold 20 min.
- 400 degrees per hr to 1250 - hold 20 min.
- 600 degrees per hr to 1550 - hold 30 (large molds can go to 1600, hold 40)
- full to 1000, hold 40 min.
- 100 to 900, hold 40 min.
- 100 to 750, hold 20 min.
- 400 to 100, & off. (don't peek until cool!)
When finished - turn the mold upside down and hopefully the pieces will fall out. If not use a soft spatula or similar to pry a little. There will probably be kiln wash stuck to the bottom. Scrub it off with scouring powder and a toothbrush. Admire your new jewelry pieces.
Til next time.