FreeCAD course – Gear wheel, drawing dimensioning
Drawing dimensioning workbench is not available in standard versions of Freecad. It must be installed, in version 0.17 by Addon manager (Main menu: Tools → Addon Manager), in older versions manually: https://github.com/hamish2014/FreeCAD_drawing_dimensioning. Inkscape is a multiplatform-platform Open Source program for vector graphics https://inkscape.org, used here to simple hatching.
Download files: Gear wheel.zip