I received a sample rod of dark matter and the entire rod turned into frit. It was very frustrating - I never got to really try out the glass!
Preheating works great for a small amount of a rod, but if you're using a bunch of it you just end up with it splitting once you get past the preheated part. I get VERY frustrated when the rod snaps and a chunk ends up sliding on my bead...
Aimee
