[Sherlock]

I've done quite a bit of work with Lexan or acrylic sheeting and have found that when it is tooled it chips and cracks often regardless of thickness. Even during the drilling process it can crack or even shatter. And when working with npt fittings, you're dealing with tapping tapered threads; you're just asking for problems. I believe the best solution for working with Lexan is minimal tooling. Just drill the holes and fuse some sort of nylon/plastic/acrylic hose barbs to the top with acrylic weld or something. The button head holddown screws are probably o.k.,as long as the holes aren't right on the edge; set them in a little. Thats about all the stress this product can take.