Wrapping Station spool support ends

I was looking for a solution for my Etsy shop wrapping station. We had a 300ft roll of paper that was difficult to manage, having already used ⅓ of it I decided to look for a solution, something that I could screw to my preparation surface and quickly swap out when needed. I already had a 20mm dia steel curtain poll (actual 19.5 dia) so thought I might find something available on maker world. After much searching I thought I would be better off designing from scratch. Solid Edge was my go to, and I found it easy to use to generate the slots and screw holes as this is a built in feature. The slots are 20mm width, but this can be either scaled in bambu Lab, or adjusted using the included step file.