A pencil sharpener is used to partly sharpen the ends of the long wooden dowel axle. A sharp point is not required and will make it more difficult to fit the plastic axle clips which hold on the wheels.
Gradually push and twist the dowel (twisting is very important as this helps keep the dowel moving in a straight line) into the foam block in the position shown in the bottom corner of the block.
Care must be taken to ‘miss’ the battery! The dowel will pass near to it but should not touch it! Make sure the axle is straight and that it sticks out evenly on either side of the block.
Push a striped plastic tube (bearing) into the centre of each of two foam wheels. These bearings will help the wheels spin freely on the axles. Now fit the wheels onto the axle and carefully but firmly push on a small plastic tube axle clip onto the ends of the axle to stop the wheels from falling off. Various colours of axle clip are used in the motor projects kit eg. clear or yellow are common.