Ikea Sewing machine spool spindle

This is a replacement spool holder for the Ikea sewing machine. My daughter has one and the spool holder broke. I decided to learn how to use openscad and design one (via several iterations). I now realise that there are a couple of other designs on Thingiverse. Mine is a simple pinch to fit design without the external rings as they kept breaking off my early version so i just widened the overall block.