Functional Christmas Train Set

  Merry Christmas! This fully functional train prints without any supports on any of the parts! All parts are fully 3D printed except the motor, switch, and 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 who desires to design their own cart topper.   For Part name references, refer to the “Train Key” PDF below Assembly: Train Engine: 3D Printed Components Main body x1 Drive wheels x2 Follower wheels x4 Engine Wheel Pins x4 Coupling Rods x2 Smokestack x1 Cover x1 Electric Components Geared motor x1 Switch x1 Duel AA Battery holder x1 Here is the Amazon link to the bundle that I bought: https://a.co/d/jm5NdyH   (This one had a lot of extra parts, and these components are fairly standard, so feel free to source from other places.   Assembly Steps: Fit the motor into the train housing by first sliding the back end of the motor towards the rear of the train. You will then twist the motor until one of the axle sides is poking out of the wheel hole. Push down the other side of the axle until it is locked in place. Wire the switch, motor, and battery pack by sodering one of the wires straight to the motor and then adding the switch in between the second wire and the motor. MAKE SURE to test the spinning direction before soldering. (The switch will slot into the back of the train; you will want to route the wires through the channel before soldering in place. Add the drive wheels by pushing them onto the motor drive shafts Push the wheel pins through the follower wheels (ensure they spin freely.) Push pins/wheels into the four corner holes in the train Snap on each coupling rod onto both sides; you will need to rotate the wheels into matching orientations for everything to fit properly Snap the battery holder in place in front of the motor The cover will slide into place and lock when pressed firmly into the recess Finally, fit the sm