Yes, it’s very interesting. If you’re going to attach it to other
glass, you have to know the COE of your base glass, otherwise, it
really doesn’t matter. I’ve used all 12 colors and the reds darken a
little more than I would like, however, when you’re done firing, you
have a solid piece of fused glass in the shape you want. Art Clay
World, USA will be carrying them shortly.
Art Clay World