Hello. I’ve been using sweep2 to create surfaces, mainly because it allows realign curves with “lines” during creation, but I’ve learned that these surfaces are not precisely follow curves. EdgeSrf or Loft on other hand create surface that does follow curves precisely, however they don’t allow ali…

check out _devLoft and read some of the other topics on “developable surface” (vs. ruled surface) DevLoft - Loft | Rhino 3-D modeling The Loft command fits a surface through selected profile curves that define the surface shape. [image] How to Unrolling d…

Thank you! This looks very promising, but in my limited tests, it was producing mixed results, mainly, because it ignores rulings I’m trying to add (via interactive mode), or place them at totally different angle, or better yet, I click at one curve, but it shows the starting point assigned to anoth…

[image] V@no: here it doesn’t… because the condition for a developable surface has to be fullfilled. see the following surface while its unrolling: [image] If you evaluate the surface along any ruler’s position (violett) (connection between the 2 rails) the surfaces does not have any twis…

[image] Tom_P: because the condition for a developable surface has to be fullfilled. Thank you. So essentially, the adjustments have to be gradually done towards problematic section, not drastic like in my example. I’m still a bit confused what that purple line represents when adding ruling. …

The purple line is the “ruler”. Think of a sign-maker’s squeegee pressing the curved surface down onto the flat one as you move it along.

Loft or EdgeSrf with realignment?

Rhino

Tom_P February 2, 2026, 10:37pm 2

check out _devLoft
and read some of the other topics on “developable surface” (vs. ruled surface)

Topic		Replies	Views
Sweep2 - Ruled surface Rhino for Windows rhino	9	3366	April 8, 2022
DevLoft Command Serengeti (Rhino BETA)	2	3504	May 24, 2022
Unrolling a loft / developable surface Rhino for Windows	6	1369	April 5, 2018
Loft problem! Whats wrong? Rhino for Windows	11	12644	August 16, 2013
Unrollsrf/Smash Perforated/Panelised Curved Polysurface for lasercutting Rhino for Windows	6	788	January 26, 2021

Loft or EdgeSrf with realignment?

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