Full Version: OBJ to 3DM

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I started trying to recreate the key surfaces, but this is very fiddly and frustrating so I'm probably giving up on this project. :(

Andy

Image Attachments:
Screenshot 2024-03-05 193139.png 

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Decided on this approach then export to Alibre Design and re-draw a new volume to match.

Image Attachments:
Screenshot 2024-03-05 202315.png 

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Andy,

The way to do what you want to do is import the original mesh file (50,000) into a poly-modeller (blender)
Build a new model around the original all in quads and go as low poly as you can and keep the shape (using the subdiv modifier to help)
then you can import the new lowpoly model into Moi using the subdiv import.

Val

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https://www.youtube.com/watch?v=4sC131_cO6U

Maybe help you this feature in Rhino 8.
Mik

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Message 11360.9 was deleted

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Hi Andy,

I don't know if -what I want to suggest- will be helpful for you or not!

>when I try to import it into MoI3D V4 it takes a very long time on my fast PC.

I also once tried to import an Stl in MOI so, I opened Blender and saved the Stl file as an Obj but it took a lot of time to be imported in MOI and it never imported it!

Then I realized there were overlapping points (vertices). so, in Blender I did
something used to be called (removing doubles!) and then saved the file as an Obj. This time I was able to import it in MOI without any issue!

I don't know if you checked your model for double vertices or not but I recommend you to check that before importing it in MOI.



I was able to import your attached model in MOI as an Obj but only after I removed over 4000 excessive vertices using Blender.
Hope this method will help you.

-Psygorn

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Thanks psygorn - very interesting! I will give that a try! Andy

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Hi Psygorn,

error message appeared when I tried to answer for your private message. You disabled receiving private messages probably.
Mik

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Hi Andy,

in addition to Michael's post, here is an reverse engineering approach in Geomagic Freeform:

1- Create a smoothed out, healthy mesh to work with in GOM Inspect.

2- Create a thickness to the mesh in Rhino, otherwise it won't import into Geomagic.

3- Draw boundary lines for your patch layout. These lines can be "fitted" to the voxel mesh.

4- Create patches step by step.

5- Export patches as STEP files, so it can be used in parametric CAD Software.

This is how i worked in my former company. Please remember that Reverse Engineering is very time consuming.

Best regards

Image Attachments:
mesh - patching.JPG  mesh - step import.png  mesh refined.png  mesh structure.png 

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@ PILOU:

The " Skin Surface" Tool is amazing.

I tried it out some years ago. Unfortunately, they don't sell it as a standalone function.
Otherwise, it would be a great addition to one's toolbox.

QUICKSURFACE is also a good option, it costs around 4,000 dollars.

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