Filament Shelf

I wanted to use brackets that I already had, these are designed to clip on to this:
https://www.amazon.com/Dewell-Triangle-Brackets-Mounted-Supports/dp/B07QPLSRWM

There is a front and a rear because there is a small boss that indexes with the holes in the brackets, this way the rods are aligned and there is even spacing between both sides. There is a small pilot hole in the center of the boss to mount the bracket, i put a screw through the bracket, mount, and into the wooden dowel

I used 1.25" dowel, you could also use conduit if you wanted. I figured that this would flex less than 1".