topic Snap Edge onto surface in Fusion Design, Validate & Document Forum

Snap Edge onto surface

Anonymous — Sat, 23 Feb 2019 10:36:18 GMT

Hi all,

I'm a beginner using Autodesk Fusion 360 and I'm working on my first model, which you will find attached to this post.

It's supposed to be a 3D model of a rising sun. I have some edges that lie above the actual body surface, and I was wondering how I could snap the edges onto the surface, so that they become one entity.

Also, I'm trying to round off the end of the spikes... but for that, they need to end in one vertex. But they aren't actual polygons, so there's no welding option available. Does anybody know a workaround?

Thanks so much in advance.

Re: Snap Edge onto surface

chrisplyler — Mon, 25 Feb 2019 02:17:14 GMT

Can we have a file of your model wherein the design history has been captured?

How did you make what you've already got there? Do you want a smooth transition, such that there is no demarcation between the flames and the dome? Or do you still want a slight angle where they meet such that a "separation" circle will be visible on the surface where the flames meet the dome, like this:

Re: Snap Edge onto surface

TrippyLighting — Mon, 25 Feb 2019 11:35:34 GMT

First, as a beginner in Fusion 360 it is recommended not to work in direct modeling mode. It makes it easier for those who help here on the forum do figure out what steps were taken to create a model.

The geometry in your model so far is pretty broken, which will make working with it painful.

Your verbiage seems to indicate that you've worked with mesh / Sub-D modeling software before ?

In Fusion 360's Model and Surface workspaces geometry is not represented as meshes, but a NURBS surfaces and BRep. As such, while there are still vertices, edges and faces mesh modeling techniques don't work there. For that you'd have to create form feature and work in a T-Spline environment.

Edit: Or maybe not. In Fusion 360 I don't believe you can fillet a vertex (even though I remember having seen that once ?). So in order to "round off" the tips of the star you'll either have to have a vertical edge, not a vertex, or you can do it as I show in the screencast.