Hello my friends,

here is a stackable spooltower for you.

All different spools will fit in the tower. 

I designed a bottom element with a base, a regular element, a top element and two different lids.

A regular element has a height of 79mm. Just add the quantity of regular elements to the height of 187mm to get your total height of your tower.
The tower I printed has a height of 740mm.
I also designed a connector to fix the elements on the backside. I also designed a samplekit that you can attach to the tower. 
The text (PLA) is changeable like on the connector. 

A tolerance test is also included and use glue for the lid on top.