Scubapro 108/109 Diaphragm cover

Rendering of diaphragm cover, modeled in Freecad. will be attempting to print in TPU, but I have concerns about supports... will update as it progresses.

Edit#1 Support worked out surprisingly well. Thickness of outer ring was too much to assemble the reg, and the overall stiffness was a bit much. Will try the v2 when time permits.

Edit#2 v2 reported as useable, but a little stiff, with 95 duro TPU. v1 files removed

Edit#3 v3 added, slightly thinner in the domed portion than v2