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Old 2018-01-01, 2:13pm
ESC ESC is offline
Senior Member
Join Date: Feb 02, 2010
Posts: 2,029

I've only used ribbon cane on the surface, but when I got grooves was when I used glass with different viscosity (not COE, viscosity). So, if you're using clear of some sort and opaque of some sort, unless you melt them completely orange, you're going to get grooves. The trick is that when you melt to orange, it's harder to control the separation of color consistently. Lots of practice.
Soft glass on a Minor/concentrator since 1996
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