@Tim_Rastall This is my answer to the falling z stage. This thing is almost ready. Probably going to be the last teaser until it’s complete.
Worm drive!
Very nice!
Notice the axel bearing on the left. I ran out of blue a half inch from the top. So swapped to red. Adhesion was sketchy so I welded it with the soldering iron. And scraped it smooth. And the inner axel locks are actually goopyplastic knobs for the xy rod end.