I made the machine to help me assemble a bunch of boards for my electronics minded child, essentially a gridfinity based set of building blocks for electronics circuits. It works very well and he's totally happy with it. It also got him into building stuff with the Micro-Bit. My eyesight sucks and working with SMD parts is really tricky for me so I figure better to let one of my many Prusa's be the sacrificial lamb. Worked like a charm but it is not a build that I would recommend to others, there are just too many places where the 3D printer setup is fighting what would be good for pick-and-place. The best - and probably most reusable - bit to come out of it was a 3D printed nozzle that will pick up anything from 0402 to very large parts without a nozzle change.