Hi Matadem,

The attached OBJ file is similar to a pipe structure. You can use your topology optimization results as a reference to generate helper curves to serve as pipe rails, then use the "MultiPipe2" command. You can also use different styles to set various pipe radii.

If you plan to create more complex objects like those in the video, you will need to retopologize your object, which can be challenging. While there are various plugins for automatic retopology, I haven't tried all of them. Here are a few tips that may help with an auto-retopology workflow:

1- Make the object symmetrical to achieve cleaner results more quickly.
2- Use a denser mesh for retopologizing, your object file was too low poly. In my experience, results are better on slightly denser meshes—though not excessively so. For your object, I first used the "Remesh" modifier to make it slightly denser and then processed it with the "QRemeshify" plugin. (Any other auto remesher will do)

Attached the multipipe result and remeshed object (not perfect).

MultiPipe Command:
https://moi3d.com/forum/messages.php?webtag=MOI&msg=12116.6

QRemeshify:
https://ksami.gumroad.com/l/QRemeshify

p.s
It has been a long time since I last updated this plugin. I realized it's been two years since the last update, so it might not be compatible with newer versions of Blender.