Hi, is it possible to convert a obj mesh file to a solid body that can be used to in a CAM software ?
I am looking to program this part on a cnc but I cant do anything with it if its a mesh
Thank you!
shoeee.3dm (14.4 MB)
This is not a push button conversion. Search for reverse engineering here on the forum and on Google to understand what is involved.
You might be able to convert to subd and then to nurbs, or, ShrinkWrap and then to subd and then to nurbs. However, you still may not end up with a machinable model.
The mesh looks pretty clean, like it was exported from a nurbs model rather than a scan. If that’s the case, can you get the original nurbs model?.
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I was going to ask… where did you get this model from?
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Find some CAM software that can machine on meshes. There are many.
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If I have a single mesh stl file, is there a command that I can use that will separate certain parts of this model so I can assign it different colors when I 3d print it?
I would upload the file, but it was too large.
Thank you!
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This is what the model looks like, so Im not sure if separating it into different layers/parts is possible?
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What is the goal here? First you wanted to convert to *.step for CNC machining, now it’s about adding color to meshes. Did you want to print separate parts so you can hand paint them individually?
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When I see this other image from you in other but very very similar discussion
I am quite sure you can use Explode Mesh command, it will unjoin all meshes so you could then add material.
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I looked at the file earlier this week. If I remember correctly at least some of the meshes are open.
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Yeah I found a new cleaner model with more detail, however it is just one large mesh body. I tried to upload it but the file is to large, do you have any suggestions how I can upload it
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If it is quite the same no need to upload.
I think shrinkwrap can do the job but you need to add some thickness to some part. You can use Mesh Offset (solid option).
I did not try to go too far but here some results
In order to have color you need to have initial mesh with color on vertex. And here it is quite a mystery for me to do that in Rhino. Then when you have done that use the option compute vertex color in Shrinkwrap. But I wonder if there is a bug there as it takes forever with the complet model but works with simple model.
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The question remains. What is the goal?
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I initially wanted to cnc but after converting the mesh its a pretty large file and the surface isnt the greatest to machine, so I am thinking of 3d printing it on a stratys but I need to separate the file the so I can assign it different colors
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Okay but why all this trouble to either CNC or full-color print (two wildly different things? Why worry about printing in color if 1st choice was machining?) a random shoe model that was quite evidently not designed for either of those things? I mean Nike can get you what you need, if you’re working with them.
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Stratasys…
Maybe better start with two basic protruding objects, export as *.3mf and import in Grabcad.
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From what I did recently for toy industry, with only Rhino, before having “new commands” like SUBD, I would split the mesh in “nurbs modeling styles” mesh pieces, and then recreate the nurbs surfaces from mesh pieces one by one….
That is not an efficient way but It can do.
Quad remesh can “remesh” those triangular mesh pieces into “relatively organized” quad meshes, which is prepared for next step- TO SUBD=> TO NURBS.
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