Friction Bearing for Rocker Box / Dobsonian Mount

I've uploaded this model for those looking to build / improve a Dobsonian mount, particularly the swivel motion. When I first built my rocker box for the Hadley, I used a cheap lazy Susan bearing from the hardware store. This was a mistake, as the bearing has a lot of lateral wobble and is prone to backlash and drifting when not on level ground. This friction bearing is intended to resolve these issues while remaining easy to work with. The bearing is 180mm in diameter but should be able to be scaled up and down as needed. To allow easy assembly and transportation of the rocker box, there is no attachment between the halves of the bearing. Gravity is all that holds it in place. In theory, the bearing should not require tight printing tolerances but any bumps and zits should be cleaned off the surfaces of the ‘rails’. A little bit of grease on the rails also helps to keep the bearing moving when supporting the weight of the telescope. Note: I printed the bearing in PETG with a 0.6mm nozzle. I haven't tested PLA but I would think it should work about the same. Changelog: 9/11 - Added 8mm hole in the center for a bolt to make the bearing captive