Filament spool hub

Update: Learned a bit more about Fusion 360, and I've added a chamfer to the bolt end to make it easier to thread. Download "Hub male v2" for the new version.

In preparing to build my filament dry box, I wanted an adapter for the spools to put them on a dowel or rod. Some of the other ideas I've seen involve threaded rods and jam nuts. I decided to create a self-contained hub.

The threaded design will accommodate hub widths from 45 cm to 65 cm (you can stretch this to 68 cm for the Hatchbox hubs), and with hole diameters from 45 cm to 59 cm. Designed for a central axle of up to 13 mm (1/2-inch).

This is the very first object I have designed from scratch. I've been using other things uploaded to thingiverse, and decided it was time to give back to the community.