Modular Spool Rack inspired by MikeFliers one, easier to print and with parametric holes to customize to your local available rodsizes.

Recreated completle new in Fusion360.

All parts beside the middle bracec can be printed without supports.

In my example I used 20mm pine rods, the vertical rods are 230mm and horizontal are 700mm.
For screws I used 4x60mm wood screws.
 

Assembly Video