3D Printed Thomas Mini Track System

Cool.  Maybe you can offer customization such as putting the person 's name on the engine

Sure that's fairly easy to do, I could put a persons name or their childs name on a model no problem.  In fact another thing that would be fairly easy would be to make name plates suitable to go onto the side of a full size PlaRail model.  Of course the other option available would be a custom base colour other than in this case the base yellow.  I'd be happy to do this for anyone who wants a custom version of one of my models

The ultimate collectible in a way as you could have a unique model