Auto-Rewind Spool Holder for Drybox

I used to operate auto rewinder spool holders like https://www.printables.com/model/199248-narrow-double-stand-for-75mm-integrated-auto-rewin inside my dry-box. The challenge with those was that it always was kind of some fiddling with the axle and the integrated rewinder when changing spools.As such I was enlightened when I saw the idea of https://www.printables.com/model/292276-auto-rewind-spool-holder-for-reprack, just that I didn't want mine hanging on a rack but simply standing in my dry box. As such I concluded that I could reuse the cylinder shells and the inner coils from there but just design my own standing frame for the same.And this is the result: A set of frame modules that can be attached to each other with M3x16 screws and corresponding hexagonal nuts, each capable of holding two cylinders from the original model.During the process, I had to resolve two issues I experienced with the original cylinder shells and inner coils when printed with PETG though:The surface of the