topic 回复： Machining a round coil using 4th axis without machining extension in Fusion Manufacture Forum

Machining a round coil using 4th axis without machining extension

piotrstrzelczykk — Wed, 13 May 2026 10:22:32 GMT

is it possible to machine such feature with 4th axis without machining extension? coil size and pitch is 14mm with no tight tolerances. I've been thinking about using 14mm endmill and just rotating the part on A axis and moving the tool along X axis. would it be possible to generate such toolpath in fusion? How would You approach it?

f3d file attached below

回复： Machining a round coil using 4th axis without machining extension

2129965288 — Mon, 18 May 2026 09:42:19 GMT

Is it so?

(view in My Videos)

回复： Machining a round coil using 4th axis without machining extension

piotrstrzelczykk — Mon, 18 May 2026 11:34:13 GMT

Yeah, but I don't have the manufacturing extension. So i guess it's not possible without it.

回复： Machining a round coil using 4th axis without machining extension

2129965288 — Mon, 18 May 2026 13:12:59 GMT

You can machine using 2D Contour. However, when using non-chamfer tools in 2D Contour, the toolpath can only offset left or right along the selected contour. Therefore, with chamfer tools, the tool will be centered on the machining contour as long as no chamfer width is set.

(view in My Videos)

Re: Machining a round coil using 4th axis without machining extension

piotrstrzelczykk — Mon, 18 May 2026 16:46:02 GMT

I guess I can trick fusion by programming my ball endmill as a chamfer tool and use this technique. Thanks a lot!

回复： Machining a round coil using 4th axis without machining extension

piotrstrzelczykk — Mon, 18 May 2026 18:16:00 GMT

one last question! I can't recreate what I've done on my first uploaded file. Now when I'm creatng a coil it generates the 3d sketch on the outside of the coil. Do you know how to recreate it so that it generates the sketch on the inside as it did in my first file?

here's how it looks now:

回复： Machining a round coil using 4th axis without machining extension

2129965288 — Tue, 19 May 2026 03:38:42 GMT

(view in My Videos)

There are two methods