Spool hub - 75 mm to 8 mm

This is a simple three spoke spool hub for adapting a 75 mm diameter reel to an 8 mm spool rod.

The design allows for a bit of flex or bow to fit snug on both sides of the spool. Spools are not exactly the same diameter on both sides so one side will be tighter or looser than the other.

The STL file contains one spool hub Cura scaled and oriented for printing. You need to print two.

It is highly recommended that you use calibrated filament. I use these calibration pieces to calibr