Leadnut for printed linear bearing and 20mm y axis

I've been tooling around with a bunch of scrap from other cnc / printer / laser projects looking for a way to increase the size of my printer drastically. I have a frame mostly finished of 1" 80/20 with aluminum angles and brackets all around giving around 13 inch travel in x and y, z.. I had enough openrail and 20mm extrusion for the X and Y but not Z (and i figured this to be the most susceptible to wobble), so I wanted to try the printed linear bearings for the 1" 8020 which i had extra o