Turret Ring Slew Bearing base and main pulley for Moveo Robot Arm

This is another modification based off of Labala's excellent Moveo upgrade parts. This time I've bored out the main pulley for arm rotation and made a matching base for it. This uses an inexpensive 5.5" (140mm) turntable bearing (I used this one specifically https://www.ebay.com/itm/1pc-new-5-5-140mm-Home-Hardware-Aluminum-Round-Lazy-Susan-Bearing-Turntable/122799616711?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649) as well as 8 M4 trapazoid head bolts and nuts. 35mm - ish should work fine. You may need to go with phillips head ones in this instance to get proper countersink clearance.

Assembly instructions:
1. you will need the other half of the base, the motor mount, cover and belt tensioner from Labala's project.
2. install the ring on the printed base, with the ring clearance extension down, make sure the bolts are tight. Consider using lockwashers here.
3. install the nuts in the pulley ring, and bolt it to the stock arm base using the stock bolts.
4. bol