Okay so it's more repair than build but I thought it deserved its own thread rather than hijack Rob's 3D Guitar thread any further.
Some time back I mentioned on that thread that I had a damaged pickup bezel on my B2A and he immediately offered to 3D print it for me - free of charge. He wouldn't even let me cover postage. I sent him an STL file I downloaded from the 'net. He remodelled it to his own satisfaction and sent me two set of bezels.
@rwillett, As promised, here is a photo of the job.
Left: The original bezel. It was flimsy. With one corner missing it left my thumb exposed to the sharp edge of the countersunk screwhead just where I need to rest it.
Centre: Rob's 3D print as received. Rob wasn't happy with the finish. As he mentioned, on his guitar thread, he was chasing a bug on his printer. I was completely happy though.
Right: Rob's print sanded progressively from 180 through 800 to finish with 2500 wet and dry. Holes cleaned up to size and rounded edges as per original. I had him print them a bit thicker. maybe a mm or so and they're much better.
They fit perfectly on the bass and are an improvement over the original, thin, plastic bezels.
Thanks Rob!