NormandC wrote: ↑
Sun May 05, 2019 2:23 am
bluetiger9 wrote: ↑
Sat May 04, 2019 8:04 pm
If we ignore the above technical limitations / drawbacks, I think, we all agree that using points makes more sense.
I disagree completely with that statement. How can you presume on our preferences?
I was not aware of the aspect that the diameter of the circle may be used as the diameter of the hole.
To me, defining a hole through a point is illogical, and no CAD program I've ever used has done such a thing. I'm not currently on my computer, but I believe that lone points in a sketch aren't even displayed out of the sketch editing mode, which would be an unacceptable drawback.
Fusion 360 and Inventor both uses points as reference for holes. The points are displayed outside of the sketch editing mode too. In my opinion, a point is just as a valid geometric object like a line or a circle is, so I see no reason why it wouldn't be displayed. As chrisb mentioned above, in FreeCAD currently points are always construction geometry. I think that's why are not shown outside of sketch editing mode.
The hole feature uses only the center point of the circle, while the diameter is being ignored. So, using a circle instead of a point may seems redundant. Having to deal with the diameter of the circle too just adds unnecessary complexity to the sketch.
In the propriety CAD program I use at work, there is a specific sketch tool for the hole feature. Because the hole feature is created before the sketch, it automatically dimensions the circle based on the hole settings; it even adds a concentric circle when the hole options define a countersink or a counterbore. Of course that wouldn't be possible in FreeCAD since we always start with the sketch.
If the diameter of circle is used, I agree that having a circle would make sense.