Institute of ImaginationRobot LabRobot Lab

Step 2 of 7

Push in the axles

Push a skewer through each straw, with the same length sticking out on each side. Spin each skewer. Does it turn freely?

The underside of the box with a skewer pushed through each taped straw, its ends sticking out past both sides of the box. A curved arrow at the end of each skewer shows it spinning freely inside the straw.