topic Re: Sweep/Loft hybrid? in Fusion Support Forum

Sweep/Loft hybrid?

justphredrick — Tue, 25 Jan 2022 21:25:57 GMT

Hi there, I am looking to create a complex surface.

I can Sweep a profile along a path,

and I can Loft from one profile to another.

But is there a way to go from one profile to another (like a Loft) along a path, perpendicularly (like a Sweep)?

lichtzeichenanlage — Tue, 25 Jan 2022 22:10:41 GMT

You can define rails to guide the lofted surface.

justphredrick — Wed, 26 Jan 2022 00:04:40 GMT

I have tried that, and I get the Warner that "selected rail does not tough all of the profiles."

it's not acting like a Sweep.

davebYYPCU — Wed, 26 Jan 2022 04:01:34 GMT

Change to Centreline Rail, and the message will be avoided.

Message is valid for normal Rails.

Might help.....

justphredrick — Wed, 26 Jan 2022 04:57:40 GMT

I have tried that as well. got two different errors this time.

originally I was importing an SVG, bu then I tried doing evert thing in Fusion.

justphredrick — Wed, 26 Jan 2022 05:03:50 GMT

this works when I used Sweep and set the orientation to Parallel. but there is no Parallel setting in loft, as there is in sweep.

davebYYPCU — Wed, 26 Jan 2022 06:58:09 GMT

Works for me.

(Loft will not play well with careless constructions.)

Might help....

lichtzeichenanlage — Wed, 26 Jan 2022 11:47:09 GMT

True, the loft is functioning this way. Here is a link to a good thread
that explains the different projection types to make rails work:

https://forums.autodesk.com/t5/fusion-360-design-validate/lofting-and-projection-include/m-p/7223604/highlight/true#M124477

justphredrick — Thu, 27 Jan 2022 00:47:45 GMT

What are careless constructions?

davebYYPCU — Thu, 27 Jan 2022 01:11:38 GMT

You supplied 3 pictures where the intended rail is not connected to profiles.

Centre line Rail that extends past profiles, and does not penetrate profiles.

The Loft Tool has informed you that rails must involve all profiles, and you made no apparent changes, within the geometry.

Loft is finicky even with careful construction, but plain stops with your depicted geometry.

Might help....

TrippyLighting — Thu, 27 Jan 2022 12:44:02 GMT

@justphredrick wrote:
What are careless constructions?

I have a feeling I know what he means, but to be sure it would help if you could share your design (export as .f3d and attach to next post).