Basic printable spool holder

This is a very simple remix of the basic printable spool holder by JadeKnight 3066
I like designing in OpenScad so I have converted to that.
I am aiming to use wooden dowel as I think that will be cheapest.
I am interested in the form of construction as I think you could make more things with this technique. I am thinking of some bottle holders and shelves for plastic boxes.
##Improvements
- the join between the two sockets could be symmetrical which would be more beautiful.
- the t