Incredible wooden mechanical machines video

Have a look at the engineering that has gone into some of these machines. I especially like the gearbox mechanism on the 2nd video to change from raising to extending the arm.

These are amazing!
These are amazing! Incredible craftsmanship.

Very impressive - perhaps a
Very impressive - perhaps a good reminder that you can accomplish a lot with good mechanical design =)

Amazing woodwork! Even the
Amazing woodwork! Even the chains and treaded rods are wood. Really nice!

Nice woodwork

Those machines are awesome!!