Ugly Sweep with very simple curve and profile

Rhino
1

I’ve had a weird graphical thing happen when trying to sweep a simple profile (see the edges in image 2) with a simple rail.

I’ve refreshed shade on these objects and maxed out the nurbs meshing parameters polygon count in settings. I’m not close to the origin but that didn’t affect the prior sweep that was there.
The profile curves are simple. Made from a dupe face border of the prior sweep.

I exploded and rejoined, I feel like I tried it all and I have no clue why the objects look so bad. I copied and pasted into a fresh empty rhino window (image 1) and the look is much better. But I need it to look good in the original file!

image
image825×717 43.5 KB

Any thoughts? Thank you!

image
image1123×757 53.3 KB

2

Change the render mesh or split the profile. If nothing helps, upload a file

4

Not sure what you mean by change the render mesh, I already upped it to max to no effect.

What do you mean by split the profile? An actual split and then boolean union back together?

5

The profile seems to be one curve.

Please upload a file.

6

Here you go, thanks for looking. This is a different file I made due to NDA. It doesn’t show the visual artifacts but it’s all the same as the original file that does…

Sweep Problem.3dm (276.7 KB)

7

Try up this setting

image
image2588×1531 184 KB

8

Yeah, thanks, that’s what I was saying in my first post, I already maxed it out. :frowning:

9

Try sweeping a curve without fillets

10

You could also try exploding the curve before sweeping and joining the swept pieces afterward into the final solid.

11

You haven’t even begun to “max out” the mesh settings.

It IS clearly just the render mesh settings, there is no actual problem here.

Please people stop telling people to change their models to get denser meshes, there is like ONE situation where that’s valid(complex polylines being meshed as single surfaces) and that’s not the case here.

If at some point after this model is done and all the extra details are added (which will naturally up the mesh density so fretting over it right now may be silly) you need to up the polygon count for render output go into the Detailed settings, detailed here.

12

You’re saying you can go beyond the max slider settings to get a better looking mesh? Good to know!