I've tried to get rid of the degenerate faces in Netfabb. This works like a dream and surely cleanes up the model, but i still get a non-manifold error when I upload a wrl, apparently somewhere in the process some holes are created (see attached).
What I did is this:
-remove degenerate faces in netfabb, export as stl
-import in Magics automatic fixing in Magics (even less faults) - export to stl
-convert stl to obj in Meshlab
-import obj in Modo (you want to do that after the fixing because otherwise the UV-maps are thrown away - export to obj, because the x3d exporter in Modo upscales the model, when you downscale the Mesh itself by a factor 1000, this creates additional faults
-import the obj in Meshlab and export it as wrl, this is accepted by Shapeways, but with a manifold-error.
Now I'm waiting for the 'manual fixing' by Shapeways and hope this will work.
Here's some thoughts:
When I upload a stl, there seems to be no problem whatsoever. I haven't yet ordered someting in sandstone, but in all other materials things are working ok. In all the stl's that I've uploaded so far the degenerates are almost always present.
So the degenerates are present in my entire workflow, but don't appear as errors in Magics, and also not when I upload an stl (which could also be printed in non-color Sandstone, so why is the file for color so 'unforgiving'?).
When I upload a x3d or wrl, I get an error. When I sent the service desk the wrl, they find a lot of problems in the file after analyzing it in Magics 14. When I myself extract an stl from the wrl and send that stl to the servicedesk, they find no errors in Magics 14 and even less overlapping triangles than in my own analyse of the file in Magics 13.
Greetings, Eric