Created this attachment to mount the steering wheel to cardboard. I'm a noob, so I'm sure there was a more efficient way of doing this. I ended up doing it in 4 pieces for easy printing. All parts screw into each other. The idea is to pin the cardboard between the mount and slide the shaft from the steering wheel over the insert.
Printed in PETG, but PLA should work as well
The author hasn't provided the model origin yet.