Universal wall spool holder

***Thing in progress!! thinghs might be improved or changed!!
This is my design of what I think is the most universal spool holder.

It is basically a support where you can insert any piece of rod, pipe, tube or wood stick of any lenght. It is made to fit a 30mm rod or smaller (about 1.2 inches).

There are two types so you can place it where you want; betwen two walls one infront the other (print "3cm perpendicular wall") in a 90 degree angle (print one of each) or on one single wall (pr