I bought a 3D printer then had to learn 3D modelling so got into Blender. Blender certainly works. Though keep in mind that mechanical parts - gears, bearings

I bought a 3D printer then had to learn 3D modelling so got into Blender. Blender certainly works. Though keep in mind that mechanical parts - gears, bearings etc - are often easier to model in other CAD though plugins are changing this for Blender. The artistic side of Blender however allows things that other CAD can't dream of. Make an object, turn it liquid, turn on gravity, run a few frames of simulation to get a melted effect.