Question for cullet users

[Pete VanderLaan]

So, recently, I got email from a glassperson who indicated that the hood in the shop he works out of has been crudding up with all too familiar fluff. My regular experience with the phenomenon was a borax residue and those are always yellowish, notably forming around the door at either a one o'clock or and eleven o'clock position, but he indicated that it was white. That takes me elsewhere.

So, What I would like to know is whether anyone else is experiencing this stuff. I have a strong suspicion as to what it is and where it might come from but first, I'd like to hear from the legions. I don't view it as insignificant.

White, not yellow.

[Art Freas]

We had some of it with the no borax Spectrum System 96 improved studio nuggets. There was less of if than the borax fluff but it was noticable.

[Pete VanderLaan]

What cullet do you use now? Does it show any residue or something like that on the cullet?

[Shawn Everette]

When I was using cristalica my fluff was white, not yellow. Made massive cakes on a girder above the flue. Assumed it was the borax.

[Jordan Kube]

I've always encountered white stuff. Toss it in some water and the water gets "slippery". Sodium and/or Boron.