This is a 3D printed version of https://leeprecision.com/spring-attach with some modifications.

I did the Lee Pro 1000 Z bar to spring conversion detailed here: https://support.leeprecision.net/en/knowledgebase/article/replace-z-bar-on-pro-1000-with-new-style-return-spring-replaces-tr2452a-standard-z-bar-and-tr2452b-bent-z-bar

I used a wood screw to attach the other end of the spring to my 3D printed case slider: https://www.printables.com/model/503130-lee-pro-1000-case-slider

I printed in ABS at 0.2mm layer heigh. PETG may work but PLA will most likely be too brittle and may break. Fits snug on the modified turret press column but don't overtighten the column bolt.