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:

1. 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.
2. 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.
3. Add the drive wheels by pushing them onto the motor drive shafts
4. Push the wheel pins through the follower wheels (ensure they spin freely.) Push pins/wheels into the four corner holes in the train
5. Snap on each coupling rod onto both sides; you will need to rotate the wheels into matching orientations for everything to fit properly
6. Snap the battery holder in place in front of the motor
7. The cover will slide into place and lock when pressed firmly into the recess
8. Finally, fit the smokestack into the top of the cover, ensure the curvature is aligned

Cart Assembly

Components

• Cart Platform x1
• Cart Wheels x4
• Cart Pins x4
• Cart top(Regular or caboose) x1

Assembly Steps:

1. Place the wheels between the posts on the bottom half of the cart platform; ensure the ridge of the wheels is on the inside
2. Insert the cart pins into the platform wheel slot, through the wheel, and snap them in place into the platform
3. Make sure the wheels rotate freely; otherwise, pull the pin out and sand the pin slightly
4. You can now place the cart tops onto the base, this base will work with the caboose and regular carts
5. The caboose will have a separate middle “collar” piece that will snap into the caboose's body and then into the cart platform. This was done in order to print without any supports

Track Assembly

The track snaps together in a vertical fashion. Hold one piece over the other and align the circles, then push down. There are only two types of track pieces. The first is a standard straight piece, and the other is a 22.5-degree curved piece. You can snap these curved pieces together in either direction to get the train to turn at different degrees.

Building your own cart top!

Dimensions of cart base:

62mmx100mm outer rim

• The lip offset 4mm from the outer rim, and it is 2mm wide
• This slot is 3mm deep
• Build something cool; happy printing!

*NOTE: If you need more traction, add more weight to the train engine. (I added an extra 2 AA batteries)