Racing seat reverse engineering: I created a SubD based on a scan file. This works well and quickly with familiar tools such as shrinkwrap, quadremesh, and to subd. Since the shape is rather organic, I would generally be satisfied with the surface in SubD, but unfortunately, I have not yet found a reasonable workflow to reduce the many faces and better control/adjust them (rules of three;)). When I delete or merge faces, I end up with weird shapes. Does anyone have any tips on how to do this best? Thanks.
I think is the bad side of QuadRemesh for reverse modeling.
To tight up the subD model you have to increase the face count so much that make the result hard to modify.
On the other side you have to reduce the face count resulting in a far from precise 3D model.
I would suggest to use subd and Persistent snap on mesh to draw your Subd faces directly on the scan data. It’s longer, yes, but the result is way better.
Thanks for the video. I’ve already seen it and picked up a few tips and tricks from it. Thanks for that. Would it be possible for you to release Rhino tutorials in the future that also show how to build designs and constructions based on a mesh? I realize that Rhino is not explicitly reverse engineering software, but I often use mesh as a reference for surface designs.
Mesh in Rhino has come a long way (now mesh Booleans and mesh trim/split works)
but… it’s farrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr like really far… from what I’d consider a competent mesh modeler.
Zbrush, modo, blender, even maya are better and if you are investing time in mesh modeling, I’d invest in one of those products.
As much as I detest the interface and UI (their ui designers should be tried for war crimes), zbrush is the most complete and versatile mesh modeler IMO.
Please excuse my imprecise wording. Currently, my workflow often involves loading a scan file (mesh) into Rhino and using it as a basis for constructing my surfaces (precise NURBS surfaces). I often use the Cyberstrak plugin for this. In the example of the seat, I wondered if there was an efficient workflow in Rhino and SubD to recreate the seat (the reference is a scan, mesh file). The workflow from quadremesh to subd is too uncontrolled. The workflow of extracting curves and then building surfaces is often quite time-consuming. Therefore, I would like to see a tutorial that actually shows the workflow from your video, but in relation to a scan file and not a sketch.
I’m so used to that UI it would be weird to have it any other way lol your wish may come true though, I believe maxon is completely redoing the UI though I will probably keep using my pre-subscription version as long as they let me.
if you are doing RE for a living, I’d invest on some dedicated software for doing so- Rhino has some “quick and dirty” type tools which can get it done, but Geomagic, even Rhino resurf or one of the other dedicated rhino plugins for doing this type of work.
I did this type of work for a living for many years, but used Geomagic to do that work with Rhino and alias as the supporting software.
I have done some really down and dirty parts using phone scans and Rhino which you can certainly do with expectations adjusted to the inputs.
