Hey everybody. Looking for some advice to eliminate surface faceting for a machined parts. I initially thought this was just an issue w/ the way rhino draws things on screen in shaded view, but i’m finding that this type of faceting actually translates through to machining. How can I avoid this i…

@asbeastos , the surface is a bit wavy judjing the edges :wink: …and has multiple knots. You might clean it up somewhat using _RemoveMultiknot and _FitSrf. Below surface was done using a tolerance value of 3 and i´ve slightly point edited it to reduce the deviation from its source. How much deviatio…

Yes, this one is quite wavy. It is a handrail for a staircase, so I’m bound to the Plan view curve, and a few other rules(mentioned later), but can deviate as necessary in elevation in order to get better surface quality. Here is the base model that this blank was generated from(the red planar cur…

Hm, you could try to build a smoother inside rail (dark green in my file) and match it to the magenta arrow. I got it from an edge of the surface build by Sweep1 with Roadlike=Top. I guess the flattening effect is fostered by the linear segment at the end of your current rail. (which runs outside) R…

Hi Adam, If this faceting shows up in machineing, that mean the machine is using the rendermesh to machine correct? Apart from tweaking the geometry, you will need to adjust meshing settings, yours is currently at jagged&faster. I took a stab at the last file and came up with this: [image] HTH …

And you can make custom meshes for individual parts. So, if you have a complicated design/drawing/thing, you can choose which parts look good for the sake of looks, and still have speed. Or, you can work with coarse objects that still work fast on your computer, and then later export much finer mes…

no meshing, I’m machining directly off of the nurbs surfaces whith RhinoCAM. The render mesh only affects how the surface is displayed in the GUI, and has no effect on the outcome of a finished product. If i were to convert the nurbs object into a Mesh, this number of surfaces in the mesh would be…

More or less triangles per mesh is a factor of what kind of result you’re after, a finer mesh (more triangles) in this instance would more closely follow the surface i’m trying to clean-up, but less triangles would give me a different set of faceting issues, i don’t think you can really say that one…

RhinoCAM used to use the render mesh and refining that instantly improved the machining. But in the latest versions I THINK that RhinCAM (RC) creates its own mesh on the fly for the toolpaths. I haven’t found much to definitively establish this, but I think that the mesh that RC uses may be related …

Thanks for chiming in. So the solution should be searched in RhinoCam than. @asbeastos , hailing you so you don’t miss this answer. -Willem

Surface Faceting

Rhino Rhino for Windows

Willem (Willem Derks) April 15, 2016, 5:03pm 9

Are you sure about that. As the link below shows it seems RhinoCam does use the rendermesh. But it’s not my field of expertise so I might be wrong.

I think the best way to find out is to set an extremely low quality faceted rendermesh and see how the toolpaths come out.

-Willem

Topic		Replies	Views
No smooth curved edge of surface Rhino for Windows	3	669	October 31, 2014
Sweep2 faceted on simple curve only when entire sweep done Rhino for Windows windows	10	193	March 1, 2025
Jagged surface and Render mesh problem Rhino for Windows rhino	7	3164	July 3, 2019
(sweep 2 rail) Modeling Problem/question Rhino for Windows windows , polysurface , surface , rhino7 , sweep2	24	1363	October 24, 2023
Same rad curve on solid gives differing facets visuals Rhino for Windows windows	2	89	August 7, 2025

Surface Faceting

Related topics