Sunshine - Origin Glass
Borobars are made by dry pressing glass powder into a bar shape and then melting it into a solid form.
Borobars Glass Specifications:
- COE: 33
- Softening Point: 820 C / 1508 F
- Annealing Point: 560 C / 1040 F
- Approximate Bar size: 3.5″ L x 0.25″ W x 0.25″ H
Ratings & Reviews
Bubbles for days...
by Drew T -
I tried to work this into rod as gently as I could and yet the bubbles persisted. Will boil no matter what from the bars and is useless in anything decently professional after that. There are other good yellows out there, buy them instead of this.