Project Curves To Surface Problem

Hello Forum, I’m trying to project some curves to a surface, not getting the results I need. Its some artwork, with a border, screenshot and file attached, the goal is to have 3mm sheet brass with the artwork laser cut out. any help/advice most welcome, cheers
Project Curves To Surface.3dm (2.4 MB)

I get a decent result using Flow Along Curve instead.

flow.3dm (5.3 MB)


yep, that gets me what I need, thanks for the tip, appreciated :+1:t3:. I wonder if there is a way to get a result with Project ??

project projects the curves straight down in the z direction. so you would need to flatten the surfaces, then project, then unflatten

, how do I ‘unflatten’ the surface back to its original shape ?

Well, with the shape you are showing, you can do it manually. If it is more complex then you will have to look into mesh flatten. you can flatten the mesh, then mesh project it from the flat one back to the unflat one. If you are going this route you can check the Kangaroo2 component meshmap. It maps points, but you can break the curves into points, then meshmap then recreate the curves. It’s a pretty awesome tool.

Kangaroo2 ? Never used it or Grasshopper :rofl:. Thanks for the suggestion though. There must be a simple way to do this in native Rhino :man_shrugging:t3:

Well, the time is always now!

Maybe you can explain it a bit more since it seems very easy to just rotate3d the panels, project the curves, then rotate3d the panels back into their original position

I’ve kind of got what I need, but I’m sure there is a better way inside of native Rhino. They are brass panels, 3mm thick, fretwork pattern, laser cut, then bent/folded to the shape of an MDF box which they are attached too. I created a planar surface from the pattern, then used flow along curve, then offsetsrf, its ok but the folds look a little distorted, just wondering what the ideal workflow would be to get the best output, screenshot attached

Ah, I see. This seems like (once you know how big the piece needs to be to fit the MDF box) something that can be done all flat in Rhino, then once you laser cut it you can measure to the bend lines and bend it. It seems strange to me to try to recreate in Rhino what the bends are going to look like. I would imagine that they would look more like a filleted edge anyways.