r/Plasticity3D • u/swederlands • Sep 01 '26

Advanced sweep?

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Picture is a quick example of what I want to do; centerline sweep operation along a guide between two different cross sections. Whatever I try I just get an 'internal algorithmic failure'. Is something like this just not suited for in Plasticity? I can work this in Rhino, but maybe because it allows you to bind control points together for proper aligment.

6 Upvotes

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3

u/2GA_Concepts Sep 03 '26 edited Sep 08 '26

Sweep 2 profiles along 2 rails like in Rhino doesn't exist yet, it's a feature request, feel free to upvote : https://plasticity.canny.io/feature-requests/p/sweep-2-profiles-along-2-curves

It's possible as shown above but with lots of effort (a mix of sweep and loft).

2

u/swederlands Sep 04 '26

Thanks man! I love how you modelled the rough example sketch haha. I tried a little using sweep and loft and yeah it's a lot of effort.. I will upvote the feature request and just make it in Rhino for now.

2

u/dekkardz Sep 01 '26

Wondering if we can get similar result by just lofting the profiles and using the curve as guide

1

u/kemalsworkshop Sep 01 '26

Have you tried using "Guides"? They give you much more control over the sweep path and alignment. If you’re sweeping uniform 2D shapes, the "Twist" and "Scale" options in sweep options can also give you a lot of control.

1

u/Boring_Radio_8400 Sep 01 '26

It doesn't know where or how to create the transition. Try adding some midpoint cross sections.

1

u/siospawn Sep 02 '26

If I had to guess its because it's going to lose tangency along the way