My 3 year old son loves Thomas and Friends, and was asking for a turntable, so a couple of hours with a caliper and Inventor later, I came up with this. A large 6 way turntable; big enough to take a wooden James and his tender and one that still fits on my printer.

The centre piece prints in place and is held in using a 45° v-groove separated by 0.5mm, so will need a reasonably well tuned printer to print successfully.

The overall size of the printable file is 208.53mm by 197.78mm and 25mm high. The odd size is because I rotated the part 30° to fit on my printer (modded Prusa MK2). If anyone wants it I can upload the file without the male connectors which makes the parts 190mm square.

It should be compatible with BRIO tracks and BigJigs Rail tracks.