I have an arched, raised panel door that I would like to make glass panel. I imagine I would drill a hole in the panel, use a jigsaw to cut out the panel and use a rabbet bit on the back. Questions, other than if anything thus far is incorrect, rabbeting the back would leave me with a .5" deep rabbet for an 1/8" glass, what does one do with the extra space? Second, assuming it would cost a lot more to have glass cut with an arch, what would be the best way to square the rabbet? Finally, is there a preferred method of retaining the glass, perhaps one that would also solve question 1?