Using Marbles

In order to fuse pieces of glass successfully, they have to be the same coe (coefficient of expansion), otherwise, the glass will crack and break. I doubt that you know the coe for the marbles.

I would recommend using Bullseye 90 fusible glass (double rolled). The colors are outstanding and the glass is treated to prevent devit. Moretti has only a few colors in sheet glass and it devits all over the place.

Patti

Thanks Patti. Your correct, I don't know what coe meant, but I do now.

Regards, Ron