Discovered in a bog in what is now Slovenia in 2002, the Ljubljana Marshes wheel is a wooden wheel/axle combination dated to about 5,150 years ago. What it was attached to is not known ...

If you do accidentally split the wood, squirt glue into the crack ... Push the rod through the axle supports and bolt one ...

Wheel and axle mechanisms can be used in other ways as ... Most are made from hard materials, such as metal, plastic or wood. This is so they can carry heavy loads and be used many times without ...