In coordination with Bullseye Glass , we have developed profiles for annealing thick slabs of glass using the GB1 and the GB4 or GB5. The differences between the two come from the requirement that each step of a GB1 be less than 100 hours, so the longest steps for the thickest slabs are broken into two or three shorter steps.

The profiles above are in Adobe .PDF format. If you need a free copy of the Adobe Acrobat Reader, you may download one at this link.