What is this about Tin-Side of the float glass and why does it matter? Q: What is the non-devitrifying surface of float glass?
The way that float glass is manufactured, is by floating the molten glass on a bath of molten tin. During this process, small particles of metal are imparted to the surface of the glass that faces the bath of tin. This tin side of the glass is less likely to devitrify during the fusing process. It is advisable to have the tin side up (exposed to the air of the kiln) when fusing the glass that you do not want to devitrify.
