Spool Holder

This spool holder can accommodate spools with holes from 25mm to 85mm diameter.
There is a central pivot hole to allow for an 8mm screwed rod.

No bearings necessary and will fit to standard Anet A8 filament screwed rod.

This is a total remix of https://www.thingiverse.com/thing:2067525.

Update 20 February 2018:
Rounded the edges and corners and edges so as not to be so uncomfortable to use.