When I want to add a hole feature, I need to first sketch and constrain a circle where the hole is supposed to be. This would make a bit more sense if the hole actually followed the constraints of the circle, but it doesn’t – I could constrain the sketch of the circle to be one radius, and then, at the same time, specify that the hole be a completely different radius. I feel like it would make much more sense if the hole actually followed the dimensions of the sketch of the circle. If the sketch is just used for the placement of the hole, then it should be enough to simply place a point (which does not currently work – I must sketch a circle).
Edit 1: It looks like there is an open issue for this on GitHub.
Yeah, it’s just “one of those things” with FreeCAD, and is definitely not intuitive.
This is noted on the wiki, for what it’s worth - “The centers of the circles and arcs are used to position the holes, but please note that their radii are not taken into account. The generated holes will be identical even if the radii vary”.