I'm working on a DIY 150w metal halide mod of my power compact hood and need tempered glass. I understand that tempered glass needs to be cut then tempered and almost all glass shops will have to special order it. My question is why can't I cut out the glass shop altogether and get it from the same place they do. Most shops want to pass along a $20-30 delivery charge that they have to pay to me the customer. Does anyone know of a a place that actually does the tempering? I'd love to find a number to a tempering shop. I know, what a long shot this post is.