Designed on Blender and after a lot of issues as never used any kind of design software before, these printed first time without any support on my Anycubic Photon. This is my first ever design and have had a 3d printer for about 2 weeks now.

These fit to the Grot Tank design by AgentSmith99. Only used this design for measuring where the holes need to be. Cogs, Gears and Sprockets Group 1 by EpicNameFail are perfect for adding hubs to wheels, etc.

Please note that track section may be a little tight to fit initially. i thought better tight than too loose.

Now added a single track section. These are best joined up before printing if you need small lengths of track.