This is a simple turntable I designed for spraying my models (here shown with a 1:35 Hetzer). Since my 3d printer has a rather small printing area, I split the table into 4 segments that are joined with M3 bolts.

A single 12 x 32 x 10mm ball bearing goes between the support and the table. A little force is needed to join the parts, hence I used an infill setting of 20% to make everything a little stronger.

https://www.youtube.com/watch?v=KLwLNiCf3go&feature=youtu.be