I always have a few dozens large prints on hand (I make maps) and struggle to stash them. I also have tons of used 2" cores from printing paper rolls so I decided to reuse them as a rack.

I already had adjustable shelving setup with Knape & Vogt 80 series wall rails, so I bought an additional rail for the rack.

The main part is the short bracket. I wanted to test rigidity with the longer one; it still works fine, but I found that offsetting the racks isn't necessary.

Printing:

As it sits in the file. Use supports. 

The thin rings on the front bottom are fragile so take care when removing supports. If you're afraid of breaking them, it's possible to use some adhesive to bond them to the tubes. The rings are mostly cosmetic, they don't support any load.