Pencil Pro is a Blender addon that can be used to imitate the look of hand-drawn sketches. It works on any kind of mesh, and ...

Pencil Pro v1.1 for Blender adds 2.5× faster sketch rendering, screen-space hatching, and edge-flow aware strokes. Price: $15 or in Genie bundle.

Despite Blender being complete overkill for this simple part, and the fact Blender isn’t well suited for designing mechanical parts anyway, a lot of people asked for a Blender tutorial.