So somewhere in one of the Fusion updates I started running into a problem with 3d pocket clearing. It defaults to helix when ramping down into the work. I’ve never had a problem with it until about 3 or so months ago. It started getting real jerky and loosing steps (both X and Y, not sure about …

Thanks for the info. First thing to try is turn off circular interpolation in your post. Repost then run it again. This will remove all arcs from your code. [Screenshot 2024-08-25 221416] It appears the clunk is happening at every junction between arcs. Tomorrow I will test the arcs in the code…

Hello Alex, It would be very helpful to see what settings in Fusion you were using and also to see the NC code you used when it is making that noise.

Here’s a screen shot of the 3d pocket settings. [settings]

test.nc (11.7 KB) It’s just a basic file. A 5" x 5" square 1" thick with a 2" hole .5" deep.

Thank you for the help. I’ll test it further later this week with a file that I’ve ran in the past that had the problem. It did fix the issue with that sample program. The next question is why is the default on and how can I change it (or is there a reason not to) so it’s off unless I select it.

[image] Dr-Al: The next question is why is the default on and how can I change it Open your .cps post file. If you are using the Onefinity Community Edition v2022.02.21.1 or some variant of it then the setting will be at the bottom of the file. Search for: properties.useCircularInterpolati…

So I ran your test.nc and, yes, it clunks for me too the same way. Nasty! I am glad that turning circular interpolation off fixed it.

Helix ramping not working correctly in 3d pocket

CAD (Design) Software Fusion 360

Dr-Al (Alex Zeller) August 25, 2024, 8:07pm 3

Here’s a screen shot of the 3d pocket settings.

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Helix ramping not working correctly in 3d pocket

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