topic Sweep using a path that is not on a flat plane in Fusion Design, Validate & Document Forum

Sweep using a path that is not on a flat plane

jimskeet2002 — Fri, 24 Jun 2016 13:25:04 GMT

I am trying to do a sweep of a rectangular profile using a curve as a path that is not flat on a plane.

Here is the curve I select as path

[img]https://s31.postimg.org/os2f3onqz/LP_finish.jpg[/img]

And here is the outcome

[img]https://s32.postimg.org/k34ysmig5/LP_finish.jpg[/img]

It curves around with a non intentional way. Is there a way to get around this?

Also I think it would be a great idea to have options in the sweep command to choose which axis you would like the profile to stay perpendicular to, during the sweep.

Any thoughts welcome!

Re: Sweep using a path that is not on a flat plane

TheCADWhisperer — Fri, 24 Jun 2016 14:11:15 GMT

I didn't go to third part site to view your images, but -

did you create a workplane perpendicular to the start of the path on which to create your profile sketch?

Can you attach your actual *.f3d file here?

Re: Sweep using a path that is not on a flat plane

jeff_strater — Fri, 24 Jun 2016 15:43:44 GMT

Yeah, @jimskeet2002, 3D Sweep will sometimes go squirrely on a 3D path. Today, there is no real twist control on Sweep. It is on our long-term plans, but is not there today.

You can experiment with guide rails on sweep, but that requires you to create a guide path to control the twist, which might be difficult. I did not have a lot of luck with that method.

The other approach you can use is to use Loft instead. Create a copy of your profile, put it at the other end of your path, then use Loft, select the two profiles, and use a centerline rail an pick the path that you used in Sweep. You may have to put intermediate profiles, if the twist is still wrong.

BTW, it looks like you are making a nice Les Paul model. There are a few of us who have interest in Fusion for guitar design. If you are interested, let me know, and I can point you to some other threads.

Jeff

Re: Sweep using a path that is not on a flat plane

jimskeet2002 — Fri, 24 Jun 2016 17:45:43 GMT

The idea about lofting is interesting. I will give it a try. Yes I am a new guitar builder. I am about to finish my first les paul guitar which I am working by hand. Also we are having a CNC machine setup at our home soon so I have started learning how to model and machine parts.

Here you can see the model I have created for the les paul style! I managed to get a great top carve with sculpting.

https://s32.postimg.org/6z3wbsjmt/LP_3.png

My current solution for this binding channel was to use the flat path and have the binding go flat around the cut away area. Here is a photo of the model.

[img]https://s31.postimg.org/xoej69tkb/LP_finish.jpg[/img]

Also any recommendation on links about guitars and fusion is welcome!!!

Edit: I tried lofting but I could not manage to use the guitars contour as a center line. I also tried to find a way to convert the guitars edge to a 3d sketch without any luck.

Re: Sweep using a path that is not on a flat plane

jeff_strater — Fri, 24 Jun 2016 17:57:16 GMT

Very nice model, indeed.

Here are a few links to other folks' posts about guitar making with Fusion. Some of them start out as problem questions.

I'll start, selfishly, with my own. We did a similar thing with Fusion + a CNC machine. While it's not yet perfect, I think we had a pretty good result:

guitar-design-and-manufacture-using-fusion-360-and-cnc

Here are some other threads:

Good luck with your project, and please continue to post updates, if you have time!

Jeff