I shied away from Gaffer after I used the frit a few times with Bullseye glass and got crazing. I've been afraid to use it with anything else since, like Uroboros or Effetre. I think I will try it with Gaffer cane as the base. Did they take all the lead out of Gaffer? Because I never had this crazing problem with Reichenbach or Kugler frit. Maybe Gaffer has the problem with just Bullseye, and it might be fine with Uroboros. Yeah, I know I'm a little bit of a worrier.