Check out these topical, educational K'NEX building projects provided to help you make the connection between K'NEX building and real-life experience. All projects are in PDF format for easy printing.
Spur gears lay one behind the other. By turning one spur gear, you can make another gear move. When you use a salad spinner to dry a head of lettuce, you are using spur gears. These gears are inside the lid and they connect the hand to the basket where you put the lettuce. When you turn the handle, the basket turns much faster than the handle turns. The water goes flying into the outer bowl and your lettuce is dry, thanks to spur gears.