Despite Blender being complete overkill for this simple part, and the fact Blender isn’t well suited for designing mechanical parts ... meshes, or collections of vertices (points in 3D ...

As well as using ZBrush, Blender and Substance 3D Painter as mentioned ... Set the Target Polygons Count to 5 for the ...

So you have a 3D printer and need to print something ... If you want to make precise mechanical parts, don’t use Blender. Blender is a tool for organic and sculptural forms.