Problem with mesh convert

[haaslerj]

Hello guys,

i'm trying to convert an obj or stl mesh into a solid body. The mesh is from a Shinkansen quite complex with a lot of triangles. I used different techniques to convert this model: Direct convert to a Face and final thicken. This was also done after creating a quad obj mesh in 3ds max to use T-Splines. But only the "no faces supplied" dialog pops up. Also after dividing the model into smaller and easier sections. An other Method was to create a solid in Netfabb, but this alo failed "mesh to brep error".Last method was to send it to FreeCAD and create a solid Body via tool. None of this methods worked and I am stuck right now. I hope anyone can solve this issue because this would help me a lot. I also attached all files in this post.

Thanks for your attention and help.

[jodom4]

Hey haaslerj,

To be honest, by far the best way to do this is to just re-model it with a little help from the mesh section tool. There are products out there specifically for reverse engineering meshes into solid geometry like Powershape, but they're expensive. https://www.autodesk.com/products/powershape/overview

Another option is to use Recap, but you tend to run into unwanted artifacts in the geometry: 

[TrippyLighting]

You stated that you used different techniques to convert this mesh.

So is tha mesh you have attached the result of one of these conversions or what started does it represent ?

If that's the original ibput mesh then it is rather coarse and does not contain enough information to recreate the original geometry with some precision.

You might want to try yo re-design it in Fusion 360 with the existing tools

[haaslerj]

thanks for your quick answer. I want to use PowerSHAPE in the future to test if it can fix this problem. If this doesn't work, it must be rebuilt in Fusion360 with mesh as Background model. Luckily, this is pretty easy in Fusion

[TrippyLighting]

For the mesh you provided PowerShape would be way to heavy of a tool, aside from the very hefty price tag.

The mesh is too low in resolution to yield high quality output.

You can use a retopology tool such as TopoGun or RetopoFlow2 for this and get perfectly acceptable geometry given the low quality of the input mesh.

There is just not enough information in it to recreate the proper curvature. 

Vehicular Geometry on the level of the Shinkanzen is usually created with Class-A surfaceing tools such a Autodesk Alias or Dassault ICEMsurf. Trying to recreate somewhat similar surfaces is from that mesh is unatainable.