Engraved dotes and squares on the strut and holes in the couplers defines which coupler where should be glued.
Build your own marble machine.
Take a sheet of paper and draw out some ideas.
A marble machine is a creative ball run contraption made from familiar materials designed to send a rolling marble through tubes and funnels across tracks and bumpers and into a catch at the end.
Take a look at these awesome videos to get a few great ideas for lifting the balls of your own marble machine.
Laser cut wood components motor with rudder arm steel balls.
Then glue all the couplers in the proper slots.
Sandpaper knife wood glue.
Place the cut out trash parts between the ball track and use it as the strut.
Switch battery aa with battery holder screws pack screwdriver.
Http goo gl yjd1bn my other projects.
If you can get it to the top gravity will do the rest.
For simplicity the wires are terminated with pins.
To connect the motor with battery and.
15x15x10cm you do not need a soldering iron.
Think about how you can design your own lifters and get your own ball rolling.