Float Glass - 6 mm - Clear (Handy Sheet 300 mm x 300 mm)

You MUST use a tin side detector with float glass, to detect which side of glass has the tin coating on it, as this coating is not visible to the human eye and goes tin side down on t your kiln shelf.   If you do not use a tin side detector, you have a 50% chance of devitrification occurring every time you use float glass!