I have made Import STL to Blender then export as OBJ without any regulates
(Blender doesn't love me so I use it just as gobetween :)
(it knows surelly make quads from triangles! Alt - J :)
So after InstantMesh..(i am not a specialist of it :)
So you can surelly have a better result of Quads following different parameters!

With SUbD inside MOi


With Import OBJ by Max Smirnov
So you can see that Quads regulates are not optimum from Instant Mesh with the regulates that i have used! :)


PS In fact for this particular case maybe you have better way to redraw it directly inside MOi!
(maybe 1 minute in slow process ;)

QuadMesher is pretty good for that kind or job, mush better than InstantMesh.
There is a bridge for the most common 3D package.
https://exoside.com/quadremesher/

I would probably clean the mesh a bit further to get a real cage Sub-D version, but it's a good starting point.

Those certainly produce aesthetically pleasing results but for the purpose of recreating the precise dimensions by snapping to the vertices they seem to be too inaccurate.

So you must redraw in nurbs over structure...

Hi Andre, probably the OBJ to 3DM wireframe converter would get you a result where you can snap to vertices. It will make a 3DM file that has line segments in it for every polygon edge.

- Michael