Can't follow this. When I look at the part workbench, there is no way to create a sketch. And when I try to use OuterEdge - 4 it says property not found. And since you don't describe where that information comes from, I have find somebody else to explain to me what you aren't telling me.
That was Constraints.OuterDiameter-4mm You may have missed the step of naming the diameter constraint on the largest circle. Since I don't name an object, FreeCAD assumes (correctly) that I am referring to a property within the sketch. I am using a custom toolbar to add CreateSketch to the UI for the Part workbench since it is a very common operation. See my video on that here: th-cam.com/video/N8jpKo9uAEs/w-d-xo.html
Can't follow this. When I look at the part workbench, there is no way to create a sketch. And when I try to use OuterEdge - 4 it says property not found. And since you don't describe where that information comes from, I have find somebody else to explain to me what you aren't telling me.
That was Constraints.OuterDiameter-4mm You may have missed the step of naming the diameter constraint on the largest circle. Since I don't name an object, FreeCAD assumes (correctly) that I am referring to a property within the sketch.
I am using a custom toolbar to add CreateSketch to the UI for the Part workbench since it is a very common operation. See my video on that here: th-cam.com/video/N8jpKo9uAEs/w-d-xo.html