G3 Splines in SOLIDWORKS: Torsion Continuity

Learn how to relate splines in SOLIDWORKS for the smoothest possible connections. SOLIDWORKS 2020 adds native G3 Spline relations (also called C3 or Torsion Continuity). These relations will be explored on a simple 2D sketch followed by a more practical surface model example, using both the regular spline (B-Spline) and Style spline (Bezier curve)
Presented by Ryan Navarro
0:00 G3 Sketch Example
6:25 G3 Surface Example
For more information on SOLIDWORKS: hawkridgesys.com/solidworks
Technical Support Knowledgebase: support.hawkridgesys.com/

[@DonMaloy]

This is a great video for showing how to modify NACA airfoils

[@lukegiduz7040]

Thank you! Very helpful and a few neat shortcuts I didn’t know.

[@weevilinabox]

Some great tips here. Thank you.

[@imtoouncreative8263]

Perfect video, thank you

[@sjorsvanos]

Thank you!

[@swamihuman9395]

EXCELLENT! Thx. "Deep" stuff :)

[@swamihuman9395]

So, I have 30 years experience in 3D (started in 3D Studio DOS); have professionally written custom code for 3D; and am a math teacher - so, I understood everything :) But there's one technical thing you might be able to clear up... Difference between 'C', and 'G' continuities? I've read up, but would appreciate another take. TIA.

[@kandasamyrajan]

@@swamihuman9395 There is a difference between the use of C & G. But C & G used in SolidWorks context are interchangeable.

[@rayfletcher8759]

Why can't you set G3 curvature for edges of surfaces? I think that's a function in Alias.

[@hawkridgesystems]

That would be a great enhancement! SOLIDWORKS has added a number of features over the years to help with advanced surfaces such as these newer G3 Spline relations.
As of today though, if you need a mechanical CAD package that can do true G3 surface continuity we would recommend taking a look at CATIA.

[@braziliandesigner]

If SolidWorks behaved like Alias on surface our job would be so much better.

[@iamram16mustari67]

Making complex radii is one thing but how are they dimensioned?

[@hawkridgesystems]

The examples shown here were all fully constrained
If you are referring to detailed drawings and for inspection purposes, commonly they will be toleranced using GD&T features such as "Profile of a Surface"

[@iamram16mustari67]

A tutorial please. @@hawkridgesystems