The original part by gblain was too big to print on a Prusa mk3 bed, so I've modified it to have outer diameter Ø189mm.
The central shaft has been kept the same so it will still fit the original bottom part, spacer and the 608 bearings.
The original spikes will fit if you print them at 88% size.
TurntableTop-Ø189.stl | 1.4MB |