Pocket Pinball

ModelA pocket pinball design based on old-timey pinball machines.

Requirements: x1 M3 machine screw preferably 20mm or longer x1 compression spring that can fit over the screw (some pen springs will fit) x1 M3 nut, preferably a lock-nut type 6mm diameter ball bearing or airsoft pellet. Smaller sizes (like a bb) should work too Optional: x1 extra return spring for the ball launcher x1 transparent glass or plastic shield so the ball doesn't pop out (10cm x 7cm)

Assembly:

1. Insert M3 screw into hole at the bottom right corner
2. Slide compression spring over M3 screw in the ball launch gutter
3. Screw M3 nut onto the M3 screw
4. Drop a ball into the gutter
5. (Optional) Glue a transparent sheet of glass or plastic on top so the ball doesn't fly out.
6. Enjoy!