Remixed from elements of a few other models to suit my needs. Got a button box since I hate trying to press buttons on the wheel while steering, IRL and in game, and a plain old eBay car “racing” wheel. See original models linked if anything is unclear.

You may need to do some light sanding as the fit will be very tight initially. Print with the inner faces up. I used some powdered graphite to lubricate the slide joint.

"The retaining pin is a basic #6-32 x 2" machine screw (just what I had laying around).
Also uses one small magnet (6.5mmx5mm)that acts as a hold for the retaining pin."