Deleting Default Guide Rails - Surface Loft

[Jimmyfabs]

Im trying to design a manifold plenum using the surface loft tool which I will then mirror and thicken. I have my 2 profiles and a decent amount of guide rails which should create a nice flowing surface but Fusion is throwing in 2 of its on guide rails which are causing a small valley in the surface. Is there a way to delete these default guide rails and only use guide rails I specify?  I cant seem to figure it out or maybe I am taking the wrong approach.  See attached screen shots for more details, the black lines represent the default rails that are showing up.

[Jimmyfabs]

And one more....

[JDMather]

---

@Jimmyfabs wrote:

... a decent amount of guide rails ....

---

I would use as few rail as possible.

Do you have Tangents in all of your geometry?

Can you Export and attach your *.f3d file here?

[jeff_strater]

It's a little hard to tell what's going on without the model or a screencast.  But, just as a guess, I wonder if selection chaining is causing your problems:

This setting will cause Fusion to try to chain together any connected curves to the one you pick.  That can be useful at times, but other times, it causes the selection to propagate to curves that you don't really want.

If you can share your model here, I'm sure that someone will be able to take a look at it.

Jeff

[Jimmyfabs]

File attached, still in the very early stages so there some extra geometry I was using  just to test different methods.  Hopefully its not too confusion.  Thanks for taking the time to help.

[Jimmyfabs · Accepted solution]

I was able to resolve this by moving my guide rails to a different spot along the profile and selecting less guide rails.