PS Really enjoying this build, thank you. Was interested in Clough42's solution but that was waaaaay more that I needed for my little lathe. I'm excited to have a power feed with sensible feed rate as well as threading without messing in the gear box.
Just a tiny tweak - added an M2 pinch bolt to hold the collar a little more securely
https://www.thingiverse.com/thing:5156265
PS Really enjoying this build, thank you. Was interested in Clough42's solution but that was waaaaay more that I needed for my little lathe. I'm excited to have a power feed with sensible feed rate as well as threading without messing in the gear box.