How flat does the glass have to be?
No matter which resin you use, it is important that the glass sit flat around the perimeter and there be no low spots that would hold the perimeter of the glass up if it were sitting on a flat surface (like a piece of float glass). After adding taper around the perimeter of the glass to create the interlayer thickness, if there is any pressure where the two pieces of glass being laminated together come into contact (a bubble, for example) there is bound to be cracking as the resin cures. Cold working may be necessary to take down any high spots. If you want to use polyurethane, this step is unnecessary (Using polyurethane you could laminate glass with deep undulations to flat float glass). If the glass is not flat, but rather is bent is a radius, it can still be laminated if the two pieces are bent together so that they match. How tight the radius is and how many degrees (90* or 30* etc.) of the radius you are bending will determine how difficult the glass will be to laminate. Some sha
