Selecting partial holes for drilling operation

[fletch]

I have accidentally discovered a workaround to select arcs for holes: select all the arcs you want to use then create the drill operation and immediately 'Add' them to the operation (before removing any holes that may have been automatically selected).

It's not very flexible, in that you can't add more arcs but it seems to work for me.

[MRx]

It's pretty easy to add arc support to the drill operation, I did that myself here. but my drilling operation is already quite different from the upstream freecad code.

I suggest looking at the code it's not so difficult.

For example:
https://github.com/FreeCAD/FreeCAD/blob ... illable.py

def isDrillable(
obj, candidate, tooldiameter=None, vector=App.Vector(0, 0, 1), allowPartial=False
):

allowPartial is by default set to False if you set it to True it should allow half circles.