Very impressive. I've been toying with the idea of building my own dive case for DSLR.. It has been 10 years since I've used CAD/CAM applications, so quite a lot of training needed, but slowly getting there. Also purchased my own CNC router, since I do not have access to university equipment. Hah.. How did you decide the dimensions for the O-rings, springs and where the heck can I purchase aluminum as cheap as you did? Eventually I will want to have aluminium parts anodised with some professionals rather than start cooking acids at the backyard. Do you have recommendation in Helsinki region? Thanks for sharing, highly appreciated!