Help with specific metal profile folds

Hi everyone,

I’m currently designing some furniture for a company, and I’m trying to model a very specific type of metal fold. I’m not entirely sure what the best workflow would be in Rhino.

My initial idea was to model the 90° fold area as a SubD, then trim it at both ends so I could extend the length and reuse that “corner/nerve” section along the piece.

Does this approach make sense, or would you recommend a different method (NURBS, Sweep, Flow, etc.) for something like this? Geometry doesn’t need to be composed of a perfect surfaces or be ready to manufacturing, the goal is to have a realistic render so the company can understand and then proceed to produce the piece.

This is my first time posting on the Rhino forum, so any guidance or tips would be greatly appreciated. Thanks in advance!

That doesn’t look like anything that needs Subd–it’s for “extremely organic” shapes–a 2-rail sweep would probably do the job…it would be a starting point anyway. A tip there would be to make it first without the small fillets on the corners of the tube.


subd is quick and easy

what is super nice you can apply _reflect (symmetry) twice and only need to juggle one quarter of the corner.

i used
_subDBox
_insertEdge
_shear
_reflect
_bevel
some gumball editing…

subd_profile_bend.3dm (3.1 MB)

as the suggested typology does not use any extraordinary vertices / star points _toNurbs will result in a nice and clean result - if needed.

kind regards / happy modelling / cheers - tom

This type of “fold” emerges “naturally” from a compression bending process. Why would you model it?

I thought that was clearly stated:

Thank you so much for your time! Im not that experienced with subD but I’m getting closer haha

Well, to get this type of bend done, a rendering won’t help, but experimentation with the real stuff.

i am in to play with this bending … ;-D

as he said a few times… he’s just looking to model it for a render to use as reference. :wink:

realistic render so the company can understand and then proceed to produce the piece

Well, it’s about production. And so, the OP could simply send the metal shop the pictures he posted above saying this is what the result should be ; )