Spiral based spool holder with 45mm dia hole

I designed this because I wanted a good looking spool holder that fit my machine (Tinkerine Ditto Pro) that could hold loose filament I get from faberdashery.

I didn't want a full circle, nor did I want just arms, so I chose this shape.

The central hub is also separated in two parts by a spiral, so it has a bit of backlash prevention.