----- Second hand information. I still don't have a 3d printer but I've been watching the technology for years. - - - -
From the ROV community there are guys doing 3d printing components which are pressure tolerant to 100m. Just a heads up the typical 3d printing method results in micro air spaces in the layers and crushes/deforms even at shallow depths.
Seem possible with the right amount of time and patience. People are cloning all sorts of little parts.
From experience, provided that cap is not some odd material (dried chewing gum perhaps?) and won't bond, an apoxy repair might be the easy solution.
If you go ahead with this I'd love to see the results.
Cameron
@northernone. If you come across a name and number for anyone in the ROV community using pressure tolerant materials for 3D print, I would love to chat with them to see what they are using. One company that does 3D printing in a variety of materials recommended Rigid Polyurethane, but I would like to cross check that recommendation with folks that actually use pressure resistant materials. Thank you.