Simplification of 3d model

[Anonymous]

Hello, my problem is that I have a complex free-form model that has a huge number of surfaces that are Solid body. I got it by converting stl in the GeomagicDesignX program. Working with the resulting model is not very convenient and I wanted to find out how to combine them into one or minimize their number, no matter what program all the surfaces are well docked, I apologize for grammatical errors I'm from Russia, thank you in advance.

[TrippyLighting]

Judging by the screenshot, you already have a solid body (left), which only contains a hand full of surfaces.

The model in teh middle looks like the original .stl mesh. The model on the right looks like it was re-meshed sousing a quad-mesh/Sub-D/T-Spline approach.

What is the actual problem ?

What data input do you have and what outcome is desired ?

[Anonymous]

Thanks for the response, this screenshot was created for the sample, on the left is the model with the desired number of surfaces, I created Solidbody in sculpting mode, then saved it in stl and converted it to Solidbody again in the geomagiDesignX program, this is only for the sample. My main problem is that initially I don't have the model on the left there is only stl, and the result of the fact that I have the model on the right, a lot of weight, a lot of surfaces, very inconvenient when milling. I would like to know whether it is possible to make a single surface or at least reduce their number, if that is in what soft.

[wmhazzard]

Here is a good video of one possible way. 

https://www.youtube.com/watch?v=_C28G2NWUSY&t=631s

[Anonymous]

Thank you for this video, it was useful but I can't solve this problem for a few weeks, if I want to use the method that on the video it eases the problem, but I can't export QUAD mesh to Fusion, I understand it's impossible to create a fairly complex shape with a single surface.

[TrippyLighting]

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@Anonymous wrote:

.. but I can't export QUAD mesh to Fusion, ...

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Yes, you can. I do this all the time!

Here's another video (one of my own)  using external tolls and getting better, more accurate results than the fully manual approach in Fusion 360.

[Anonymous]

Sorry for the late answer, I'm doing all these steps, but the result is still a triangular MESH, now you could not tell if it is possible to export T-Splines from Fusion.

[TrippyLighting]

If you are doing "all these steps" and still get a triangular mesh, then clearly you are missing something.

The only way to find out what that might be is to create a screencast and record wha you are doing so we can determine what that missing element is 😉

[Anonymous]

Thanks I figured it out, but did not understand what I missed, but still after converting to BRep I also got a huge number of surfaces and this did not solve my problem

[TrippyLighting]

Please use the large camera button to embed images.

[Anonymous]

as you wish

[TrippyLighting]

You have a knowledge and skill gap that you cannot bridge by following tutorials without knowing what technologies really re working under the hood.

If you want to recreate this in a way that only uses a hand full of surfaces you'll have to manually re-topologize this or model it by hand.

[Anonymous]

I’m very, surprised how you got this picture, I’m not very good at it, but it looks cool, please tell me how can I retopologize, can I use the Merge surfaces tool? I tried to do this in Fusion and Rhino. Fusion can stitch all surfaces, but with strong deviations from the initial shape, Rhino does not stitch everything, but the result is close to what you want but still not very good, because you have an excellent result in the picture, Thank you for your help and response.

[TrippyLighting]

I modeled this in Blender based on a scanned model. No re-topology here. If I would use re-topology I'd probably use Retopoflow.

I imported the qualmish from Blender into Fusion 360, converted it into a T-Spline and then NURBS surface.

However, given your response I don't think you have the basis to do these things. Those are advanced topics!

[Anonymous]

Where did you get the scan? I'm surprised.Have you modeled something like this?How did you convert T-Splines to NURBS?

[TrippyLighting]

I started with Sub-d modeling 17 years ago and have modeled a good number of different things.

In Fusion 360 T-Splines in a timeline based design are converted to NURBS automatically when you click on “finish form”