Side Swiper (cootie) Morse key. Minimal hardware req.

thingiverse

This is a basic, minimalist hardware, side-swiping Morse code key, also known as a "cootie" key.\r\nNOTE: You should print the arm on a raft to prevent the leaf spring parts from warping off the bed during printing.\r\nThis design requires only five screws, two nuts and one thin washer for assembly. Small solid copper wire will slide through channels for a cleaner-looking finish. The printed PLA leaf springs work exceptionally well at returning to center. Operation is remarkably smooth.