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Two new things I've noticed and thought I'd ask about. First, even when I make a scan watertight and Zephyr (free version) doesn't find any, when I bring the piece into Meshmixer, it finds thousands of problems with holes and extraneous bits, etc. This one (https://sketchfab.com/models/470e387...f1dd6e2f5cc81f) had thousands of those. Is that just Meshmixer or am I missing something? Secondly, I did a scan of a random orbit sander I have for which I want to make a different filter attachment. When I brought the OBJ file into Fusion 360, it was less than a millimeter in size rather than about 8 inches by 5 inches. Why so small?
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Hi cjhilinski,
it may be something meshmixer specific. What does meshmixer say, specifically? Can you share the mesh?
As for the size, all reconstructions are scaled to an arbitrary size. It's up to you to rescale the reconstruction to a real world scale. You need 3DF Zephyr Pro or Aerial in order to benefit from control points, if you're using Free or Lite you'll then have to rescale the exported mesh in another software. -
Okay, I understand the sizing thing. For stuff I want to pull into Fusion 360, it's probably best to go from Zephyr straight to F360 without using meshmixer. The hat link I provided above was direct from Zephyr to sketchfab; are you able to download it from there or do you want to see it in another form?Comment
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cjhilinski, in my experience it's not that bad, let me know if this works for you?
The biggest problems for meshmixer for me have been the "cracks" and it's actually easy to fix with the right workflow. Don't spent 45 minutes repairing the mesh in the analysis tab, first go to "edit" then "close cracks" and most of the problems will be fixed, for fast repair in the analysis "repair" window.
Andrea, I had the same problem in my egg thread, so I am replying here to cjhilinski, to consolodate since it's the same topic.
As Andrea requested here is the Zephyr file and OBJ. Exporting to OBJ with and without normals in Lite and Aerial, all produced a similar error set. The problem seems to be that the edges of groups of triangles line up but do not connect to the rest of the mesh when Meshmixer opens it.
ZEP: https://drive.google.com/file/d/1RDn...ew?usp=sharing
OBJ: https://drive.google.com/file/d/1i2h...ew?usp=sharing
PNG for OBJ: https://drive.google.com/file/d/1vHQ...ew?usp=sharing
Here are the "cracks" on the model when I export the OBJ and prep it in Meshmixer.Comment
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I see all those cracks in meshmixer on my obj files, too. Running crack-filler as the first order of business helps a lot.Comment
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The cracks are located in the boundary regions of the texture. If you export the mesh without texture, you shouldn't see any disconnected region. However, they appear in the textured mesh. The reason is that when you export a mesh with texture, the boundary vertices are "duplicated": the duplicated vertices have the very same 3D position in space, but different 'uv' map coordinates in texture. Since the positions in 3D of those vertices are the very same, it should be rather easy for external software (e.g. MeshMixer and Meshlab) to unify vertices and restore the water-tightness in their internal data structure if needed.Comment
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I'm at work so I can't check, but I think I was looking for a way to export the mesh without the texture and couldn't find a way to do that. After I built the dense cloud, I built the mesh but the export command was not available for selection. If I remember correctly, the only option was to export a texture.Comment
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The mesh (without texture) export is available in the Lite/Pro/Aerial versions of Zephyr, but not in the free version. You can download the lite trial or we can send you a key. However, you should be able to correct the seams and use also the textured mesh in meshmixer. Please let me us know if you are still seeing separated components.Comment
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