It is doable with SSB's, use an offset equal to the width of the cut face (-10mm) for the path.

Select the profile SSB in the 3D view then the tool, hide the pad and select the edges for the path from the path SSB.

Change the rotation axis.....

Applying symmetry constraint will cause an over-constraint situation, there are only 3 degrees of freedom left, the length of the lines and the distance from the axis. If the symmetry is required, delete the horizontal constraint on the three top points..... An added note if there is symmetry use it...

If it's any use I was able to get close in Part wb.....

Don't hesitate to ask for more help.

The point you may be missing is that if you can build a shape in a solid, it can be built in void also.

In fact this is exactly how PD works it simply abstracts the bools from the user.

Did you read the link I posted? If so what did you not understand? Perhaps this will help:- PartDesign Body If you wish to use PartDesign tools they only operate on a Body, that body must contain a solid, unless the operation is the first one, then it must be an additive tool. Else you must create s...

There is nothing wrong with cutting parts from parts.

JUST DON'T USE PARTDESIGN WORKBENCH.

Please read this:-

Part and PartDesign

JamieRen wrote: ↑Mon Apr 08, 2024 5:24 am i tried, it didn't work. if you can do that could you paste a screenshot or upload a FreeCAD file?

Drag the LCS into the Part container, then adjust its attachment by selecting a circular edge.