Heya
I have just moved to V8 from 7 and a weird situation is happening with Sweep 1 rail, in cases where the path comes back on itself and passes within the profile it fails to complete the surface.
If I move the profile away its fine.
Both path curves have been refitted to tolerance and had make uniform run on them, as I have hundreds of complex curves to sweep and I really need this to work as they should.
Any idea if this is a bug or is it something I am missing?
The profile is created with circle around Curve but the path is the issue somehow.
as I said this worked fine in 7
It also fails if the path is rebuilt , but as I stated I have hundreds of ropes (all the rigging of a sailing ship) to do so need to refit to optimise
You are right, yep it has stopped in 7 as well now.
The weird thing is I have done about 30 of these types of curve with no issue, even knots like clove hitches that are fine.
In your last image I don’t see anything that is close to what you showed in the file.
I assume you are after modeling something realistic, so I don’t see the purpose of a self intersecting rope.
If you have history enabled, maybe you can tweak your rail curve a bit until it works, or use pipe as you mentioned.
I can assure you I have good reason for needing it done like this, I have been doing this sort of work professionally since 2004 and been using Rhino since v2 so I am not a newbie by any means in case it seems that way.
The object represents a spliced eye Stirrup which unlike a served eye is woven into itself and has no end, so in the way this is rendered I don’t want edges showing around the circumference.
I merely wanted to see if this could be a bug and I am going to assume it is.
I am currently writing a major book under contract and have 380 plans to do from this model so trying to be ultra clean with geo and in conjunction with the custom display mode I have for the presentation I can’t have edges around the circumference if I can avoid it at all.
The reason I wanted to use this over pipe is because I wanted the flexibility to scale the profile with history on.
Thanks anyway.
@Richard_Dunn I can certainly write up a YT for this, if you want to.
Just trying to understand if there is another way to get your work done. If it is for making images only you could also use curve piping mesh modifier.
If you have older versions of Rhino where this type of Sweep1 works then we could add that as part of the bug report.
The workaround shown by @Lagom could still work, because you can afterwards use MergeSrf (smooth=no)
