I’m a veteran of 3D printers. I started back in the days of the Prusa/Mendel with threaded rods and ancient bearings, complete with old Arduinos and boards with very outdated drivers. After countless sleepless nights, I finally managed to print something. Back then, extruders for 2.85mm filament and Felix printers cost two-thirds of a month’s salary. Today, everything is much simpler—anyone can print anything...