Reynard1066 wrote: ↑
Sun Jul 12, 2020 2:01 pm
I created the Datum Points onto the XY-Plane. That way the local and world co-ordinates matched up.
Can't work out how to get the Sketcher to snap to the Datum Points to draw a triangle to pocket. Seems not possible.
map a datum plane to the datum points and then map the sketch to the datum plane....i.e. don't attach the sketch directly to the datum points.
Before datum planes existed in freeCAD, we used to do something like pappyblais has posted above, although of course the profile does not need to be a triangle it just needs to be anything larger that the piece you want to remove, could be a rectangle for example. If you were to do it that way its actually better to make it wider so that the cut tool is wider than the cut out so that you don't run a risk of invalid solid due to a cut with a coincident edge, which could leave an infinitely small face behind.