A fusible glass with a COE of 82 +/-3, which can be fused with standard clear window glass. Because the COE of float glass varies among manufacturers within a range of 79 to 85, we recommend testing for the appropriate firing temperatures.
You must have a UV light (tin scope) in order to determine the proper side of the float glass that you wish to fuse on to.
Armstrong Float Fire 82 glass is manufactured to a thickness of 2 mm.