So, we're about two years down the road from the last update. For those using the various workarounds, I have good news, I have made a way to fix all the tangent handles of a sketch so that you can scale without any worries, and then unfix them all so you can adjust things if needed: https://github.com/docwilco/FixUnfixSplineTangentHandles
Clone this repo into your Scripts folder. For windows this is
"%APPDATA%\Autodesk\Autodesk Fusion 360\API\Scripts"
On OSX this is:
"$HOME/Library/Application Support/Autodesk/Autodesk Fusion 360/API/Scripts/"
You can then run it from Utilities > Scripts and Add-Ins. It will be called FixUnfixSplineTangentHandles
If you have both fixed and unfixed or only unfixed tangent handles, it will fix the unfixed ones. If you have only fixed handles it will unfix all of them.
It will tell you what it's about to do, giving you a chance to cancel if you change your mind.
For those who haven't read this entire thread, after you have fixed all the tangent handles, you can then scale the splines without distortion.
I'm sure @Claus_J and @cookiecrumblekid will be quite happy with this 😎
