The size of the original glass sheet itself is very large, generally 3.6 meters long and 2.4 meters wide. Cutting to size glass is the first step in glass processing. To calculate how to cut this original piece according to the size on the drawing, the size consumed by the back glass edge must be considered.

The traditional glass cutting technology uses diamond or alloy to cut micro grooves on the glass, and external force is applied on both sides of the micro groove to extend the glass in the thickness direction to form longitudinal cracks to achieve cutting.