Pinball machine

This is a mechanical pinball game that I made as a final project in a university course.
Some additional parts are needed:
* 3 bearings: outer diameter: 20mm, inner diameter: 9mm, depth: 6mm
* 3 M4 bolts, two for legs, and one for the plunger, with fitting nut and washer
* 4 rubber bands: two to put on the bouncers on the playfield, so that the ball will bounce off it, and two for the flippers, so that they will return to its places after pressing the flipper controllers (green)
* 1 spring for the plunger
* 1 metal / glass ball

When assembling, no glue is needed, parts are made so it fits firmly after pushed into place, and before installing the bearings, make sure that there are no dust covers on them, so that they can spin freely.