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Before you start

The parts list can be found on the design page. The wiring is explained there as well.

Mechanical coupler

We start by building the mechanical coupler.

Step 1: starting with the magnet and both 3d printed parts

Step 2: insert the magnet

Step 3: close the coupler

Step 4: closed coupler

Step 5: insert pin

Pogo pin

Assembly of a pogo pin contact.

Step 6: crimp the single wire with pogo pin.

Mind that one coach can only have one C1 / brown and one C2 / blue with pogo pin on one side, and the same wire will have a fixed pin on the other side!

Step 7: use some copper foil to adjust the diametre of the pogo pin to the pin hole in the coupler.

Step 8: isolate the end of the pin.

Step 9: insert the pin in the coupler

Step 10: glue the pin in the coupler.

Make sure there is no glue on the moving part of the pogo pin!

Fixed contact

Assembly of a fixed contact.

Step 11: starting with the wire.

Step 12: use some copper foil to adjust the diametre of the pogo pin to the pin hole in the coupler.

Step 13: isolate the end of the pin.

Step 14: insert the pin in the coupler.

Step 15: flatten the pin.

Step 16: glue the pin in the coupler.

Connected contact

Assembly of a pair of contacts.

Step 17: starting with the wire.

Step 18: same procedure as above, but the fixed pin will hold both ends of the wire.

Step 19: isolate the end of the pins

Step 20: glue the pins in the coupler.

Make sure there is no glue on the moving part of the pogo pin!

Step 21: do the very same with the black wire and attach the coupler to a train.

Have fun with it!

Mounting the coupler to the train.

Step 22: mount the coupler to your loco / tender / wagon / coach.

Step 23: have fun with the coupler!