New XL 5lb spool model!
For regular 1lb spools, see the original model.
To assemble, you need one 8x22x7 mm bearing (standard skateboard wheel bearing) and a m3 x 16mm machine screw. Click the bearing into the bottom piece and then click the top piece down onto it. It should be a snug fit, but not insanely tight. Then use the washer and m3 screw up through the bottom into the center pin on top. I would recommend adding some rubber feet to the bottom for additional grip to your table top.
I have included the .step file for easier remixing or if you need to adjust that top spool pin. It's 18mm in diameter which is perfect for 5 pound spools of Kester solder.
The author remixed this model.
Enlarged and made thicker and stronger to support 5lb spools.