So im thinking of making a box with a plexi glass window, my question is-how should I go about securing the plexi to the mdf?? The window won't be very big at all, about 12x12ish, maybe smaller. Would simple clear silicone sealant work? My plans are to make the back of my box have a window, then attach the plexi to the back therefore covering the window, then screw/glue the back mdf piece (with plexi) to the rest of the mdf box, I hope that explains it well enough, lol. Thanks in advance!