The first three parts are just simple extrusions of a 2D sketch. The fourth and fifth parts can be designed with one extrusion and a cut. They are by no means c

The first three parts are just simple extrusions of a 2D sketch. The fourth and fifth parts can be designed with one extrusion and a cut. They are by no means complicated parts. A beginner using FreeCAD or Fusion 360 can start learning today and will know how to design all those parts by the end of the week.