When you say rotating a part do you mean rotating the view or using the draft rotate (or some other workbench's rotate) command? FYI if you use the draft workb

When you say rotating a part do you mean rotating the view or using the draft rotate (or some other workbench's rotate) command? FYI if you use the draft workbench you can snap to midpoints and then convert the autocad-equivalent draft workbench sketch to an inventor-equivalent part design / sketcher workbench sketch. You can also use the symmetry constraint in the sketcher workbench to constrain a point to the center of a line. If you get familiar with it you can technically model almost anything you want[0], but if you want to go back and change a feature (which is kinda the entire point of parametric cad) it'll likely destroy your part if you're not using the topological naming branch. Freecad realistically needs 5-10 more years to get basic feature parity with professional CAD from the early 2000's and then another release or two focused entirely on stability. [0]: Their opencascade geometry kernel has some moderately serious deficiencies for complex operations/objects, the assembly workbenches are just now approaching the point where they're stable enough that you can use them without having to rebuild your assembly every week, and while the new TechDraw workbench theoretically gives you the features you need to make manufacturing drawings (which is really the end goal for any professional CAD package, those are what you need to get your parts made) in practice it's too buggy to use with even simple assemblies.