Wooden boomerang

Hello dear readers, I present to you a homemade wooden boomerang, and I will tell you how to make it. We need two rulers, a lysalent, a rapist.
1. It is necessary to place strictly in the middle of the ruler a region with the width of the same ruler, similarly to the second.
2. Using a rapist, you need to delve into this marked area to the middle of a thick piece of wood. So that when folding, they enter each other.
3. We apply glue to these places and glue the pieces of wood in revenge, when they are stuck together we wrap them around and the middle is lysed for strength.
4. Grind one side of each wing at an acute angle, smooth the corners and sides like an airplane. And we get a rially working boomerang.
That's all thank you for your attention.