Functional Christmas Train Set

Merry Christmas! Update: 12/19/2024, New wheel and coupling rod design to prevent jamming! This design change only requires 4 new wheels and 2 new coupling rods to be printed; all other previous parts can be used. The design now utilizes screws to connect coupling rods and follower wheels. To get more consistent operation, I would also suggest using no more than 2 carts. This fully functional train prints without any support on any of the parts! All parts are fully 3D printed except the motor, switch, 4 screws, and the battery holder. All other wheels, axles, tracks, etc., are snap-fit together. There is a common train cart base for the regular cart top and caboose. This creates an opportunity for anyone to design their own cart topper. For Part name references, refer to the “Train KeyUPDATE” PDF belowAssembly:Train Engine:3D Printed ComponentsMain body x1Drive wheels x2Follower wheels x4Engine Wheel Pins x4Coupling Rods x2Smokestack x1Cover x1Other ComponentsGeared motor x1Switch x1Du