This spool holder was designed for use 25-30 core diameter x 100mm spools as found with typical 3rd-party PLA sources.
The part is designed in two pieces, for easy print-ability w/o supports. Once its complete just glue to together w/ CA glue.
- (optional) insert alignment pins
- Apply CA ("super") glue to one side
- Clamp together until the glue cures<
- Enjoy it.
Note: that STL file has 2.1 clearance holes for 2.0mm pins, but they printed smaller on my makerbot. Therefore I used 1.5mm spring pins.