Fusion 360 - Tangency to a Spline

The sketch environment in Fusion 360 currently does not offer functions to make other sketch objects tangent to a spline.
This quick tutorial explores two workflows to accomplish hat.
Also works with ellipses.

[@deanbidwell9326]

I’ve been tearing my hair out trying to get a tangency condition like this. This was super helpful!

[@richard_darwin]

Man it is so stupid that we have to use complicated workarounds like this just to use a simple feature which every other CAD software has, and which clearly fusion360 also fundamentally has, but doesn't allow us to use as a sketch tool. Fusion's limitations and oversights are really starting to show themselves to me more and more

[@TrippyLighting]

Agreed!

[@Jimbo_Jumbo]

Love your advanced fusion tutorials

[@dadapasha]

Thanks for sharing. Love your first method! however second is not nearly as optimal - it can be simplified by Ruled (Tangent) from section line (eliminates need in offset and loft), or even by Construction - plane tangent to face at point (no need in PLane at angle and Face split at all).

[@TrippyLighting]

The advantage of the 2nd method is that it does not require another sketch. A side benefit is that it also allows you to „split“ a spline at an arbitrary point but maintain curvature continuity. Working with surfaces only, for me has the advantage that I can export geometry from Fusion 360 and use that in another application, something I unfortunately have to do from time to time as there are some areas in Fusion 360 that aren’t quite mature yet, particularly when working with surfaces.

[@dadapasha]

@@TrippyLighting I get that. Working with surfaces sometimes easier and sturdier than sketches and I do the same often. My point is that starting from 4:11 you can just use Ruled [Tangent] started from split edge as it gives same result as Offset-Loft-Extend chain

[@TrippyLighting]

@@dadapasha True, could have done that! The reason for this tutorial can be found in his thread on the Fusion 360 forum. this.forums.autodesk.com/t5/fusion-360-design-validate/compute-fail-for-tangent-circles/m-p/10420426/highlight/true#M252224

[@kbruin79]

Great tutorial

[@sghulten]

Hi Peter. New Fusion user here. I noticed you make use a "sketch shortcuts" dialog. Is this dialog native to Fusion or is it an addon? If the latter, what is the name of it? Thanks.

[@TrippyLighting]

Hit the “s” key on your keyboard. In sketch mode it brings up sketch commands.

[@sghulten]

Thanks!@@TrippyLighting