I'm not a lampworker (yet!). So my questions are pretty naive, I expect. I have been doing stained glass work for over 15 years and fusing for about 2 years. Lately I've been getting into fusing using millefiori. So I've been searching the net trying to find out basic information about different manufacturers/varieties of COE 104 sheet glass & rod but it is a very tedious task. So far I have found some names - Effetre, Moretti, Vetrofond, Lauscha - that I have heard of before. But there must be other brands/sub-brands too...
Is Glasstronics one? Are there North American manufacturers of COE 104 glass? What is the difference in the various brands? What COE is marble cane?
Any other information would be a great help too.