I’m working on a prototype for the AUV hull. I plan to print a 10 cm diameter hollowish sphere and use it to develop a buoyancy system.
It’s not easy to print a large sphere on a Makerbot. There are a lot of cool sphere things on Thingiverse, including some pretty sweet hollow sphere patterns. That hollow sphere is allegedly printable on a Makerbot, but I’m not sure it’s the best option for my AUV.
I’m working on a design for a self-supporting hemisphere in Autodesk’s new 123D CAD program.