Artefacts created by roughing followed by outline operations

Kiri:Moto CAM
1

Hi

Version 4.0.32
I’m using CAM functionality (as an “application” from OnShape).

I am running a roughing operation, with “leave stock” set to 1mm.
Then running an outline operation which cuts most areas, eating into the 1mm left after roughing.
However it does not follow one perimeter, so the 1mm stock remains.

This is not easy for me to explain. I hope the pictures of the object and the animation output make it clearer.

As a workaround I am running a second rough operation at the end, with “leave stock” set to 0. This works but is inefficient as it spends most of the time cutting thin air.

I have tried all options that I can think of, but I can’t be sure it’s not my error. Apologies if it is a “me problem” - driving lessons welcomed.

I’ve mailed my KMZ file in anticipation.

Thanks

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2

this is caused by the fact that the outline cleanup has a fixed step down that does not coincide with the top of the grill. so it’s removing some of the “leave” material from roughing, but not over that grill section. neither pocket nor trace address this properly, so I will need to add an adaptive step down similar to what roughing offers with “clear faces”

3

Thanks for the explanation. I presume this isn’t a 5 minute fix, so I’ll plough on with my workaround (I have to make two of these grills fairly urgently).

Please let me know if I can help with testing anything.
As always, huge thanks for your work; it’s much appreciated.

4

correct. I took a quick look and it’s going to be more complicated than I hoped.