Wall / Cupboard / Desk Infinite Length Simple Spool Rack

Hi all,

I never have space for anything, especially spools of filament, so had the idea of hiding the unused rolls at the back of my desks .....sitting place....leg hole.....?

It could of course be used in a cupboard, bookshelves and at a push in between walls.

Simple set of left and right brackets to hold 20mm plastic electrical conduit (they sell it in BnQ or you could use metal) and a centre piece to take up some of the strain between the two, each need 4 screws.

To help with ins