Tuesday, March 13, 2012


This Archimedes Marble Roller-coaster was built in 1990. Its a ball rolling on coaster. It is made out of balsa wood with exception. It uses gravity to propel the ride. 

1 comment:

  1. Hey Jojo!
    What a cool roller-coaster you have presented on your blog. I wonder how long it took to make that piece of at work.

    Keep up the good work.