I made some new covers from aluminum last week for Nathaniel and the SCUBA scanner. It seems he cracked the acrylic ones when he was putting them back on. I guess he overtightened them. I had had reservations about using acrylic, but lexan was out of his budget. Oh well, the aluminum ones shouldn't crack! His student group is going to phase two of this project. I told him yesterday that I will not be able to go any further with them, but will help as a consultant if need be. I just have too many other things that I should be doing and many things that I feel called to work on.