I just wanted a simple rotating base to paint my models, take pictures, etc.
So i came up with a simple but versatile design that can be built in various sizes, and surely could serve as a starting point for anyone wanting to do something similar.
Here´s a quick video: https://youtu.be/UNi_QUHWbWM
Note: The "Colossus" model used as an example in the video is this https://www.thingiverse.com/thing:1729528 . Great model, by the way.
Custom built CoreXY style printer
You can use less infill. I just wanted it to be very robust.
Print 1 center piece and 3 feet.
I also used:
-03 608 bearings,
-03 M8x95mm hex head bolts (or any lenght that better fits your needs)
-03 M8 nuts
-06 M8 locknuts
-01 M8x30mm hex head bolt (or any lenght that better fits your needs)
-01 (or 2. See alternatives) 6mm MDF disc with 300mm diameter and an 8mm hole in the center (or you can use any diameter you want).
Assemble the structure like you see in the pictures and video. It´s really simple and versatile.
Slot the bolt heads in the center piece, secure them with the regular nuts. Mount the bearings and feet like in the picture and secure them with the locknuts.
You can also drop the feet, and just place the structure between 2 discs (MDF or any other material). It will also work great.
Or if you don´t have 608 bearings, use some washers (one or more in each arm) that are big enough to clear the nuts and center piece, and put the structure in between 2 discs.