Super fast paper plane launcher

Step 4 Just a little trickier again: glue it!

Using the adapters mount he wheels on the motors. Some careful tapping with a hammer might be needed. Make sure the other end of the motor shaft is resting on a surface that can resist the hammering. Leave a little space between the wheels and the motor bearings. This is important to have the wheels turn smoothly. Position the assembly on the wooden construction as shown. Make sure the point where the wheels touch is aligned with mark of the arrow and that the wheels can move freely above the plywood board. Glue it in this position with the glue of your choice avoiding any holes and bearings of the motors. I do recommend using superglue. You can simply apply some drops at the edges of the hot melt glue, where it touches the wood and let the superglue soak in. In a workshop, after warning the kids not to glue their fingers, I have them holding the assembly in position and I go around with my superglue. With the younger kids I apply the drops of superglue myself.