video Most Useless Machine
J found this project on this site ''instructables'' http://www.instructables.com/id/The-Most-Useless-Machine/
and I make it,its very simple to built.Тhe purpose is useless, but everyone wants to have this machine in his workshop :)
Watch the video and enjoy.
techxpert3 years ago
it's not that useless you could use a latch and make it open a door