topic Re: Can't get reasonable cnc tool path for simple shape in Fusion Support Forum

Can't get reasonable cnc tool path for simple shape

jdubois31 — Tue, 02 Mar 2021 22:38:22 GMT

I have a simple shape of a cone on top of a cylinder and I can't get Fusion to generate a reasonable tool path. It won't cut to the bottom of the model. I even tried a second tool and operation but it creates an empty path. Any help would be appreciated. Design files attached.

Re: Can't get reasonable cnc tool path for simple shape

seth.madore — Tue, 02 Mar 2021 22:43:10 GMT

Can you share your file so we can see your settings?
File > Export > Save to local folder, return to thread and attach the .f3d file in your reply

Re: Can't get reasonable cnc tool path for simple shape

jdubois31 — Tue, 02 Mar 2021 22:45:10 GMT

I thought the file was attached? Did it not upload?

Re: Can't get reasonable cnc tool path for simple shape

seth.madore — Tue, 02 Mar 2021 22:54:55 GMT

That's a negative

Re: Can't get reasonable cnc tool path for simple shape

jdubois31 — Tue, 02 Mar 2021 22:58:03 GMT

OK, I will try again to attach the file...

Re: Can't get reasonable cnc tool path for simple shape

seth.madore — Tue, 02 Mar 2021 23:02:59 GMT

It's your "Offset" value in your Geometry tab. Set it to a small value, and Fusion will go outside the boundary you defined. See attached photos

Re: Can't get reasonable cnc tool path for simple shape

jdubois31 — Wed, 03 Mar 2021 01:10:00 GMT

Thanks, but why did that work?

Re: Can't get reasonable cnc tool path for simple shape

seth.madore — Wed, 03 Mar 2021 01:13:34 GMT

Because your Boundary is your part model. Setting it to a small value outside of that allows it to "see" the silhouette. Conversely, if you were trying to do a 3d surface (such as a mold), you would typically want to put in a small negative value so it would be guaranteed to hit everything required.