The Fuse It - Test Card is a convenient device to test the compatibility of glass. We work with several different COE's and some glass is so similar, that I can't tell by just looking at it. Instead of throwing it away, I started testing my glass. This is when I thought of this device. Yes it is easy to make, when you have polarized film. But finding it was a challenge and than the minimum order was only making sense, when I made those cards not just for me, but for you as well.
