The history of some inventions goes back thousands of years, but to this day they never cease to amaze us with their characteristics. For example, the boomerang is an ancient military and hunting weapon of the peoples of Asia and Australia.
You can make a boomerang yourself. If you have carpentry skills, then you will be able to cope with the task. To do this, you need a sheet of thin cardboard 50x60 centimeters, plywood 10 millimeters thick, carpentry tools, sandpaper, primer, paint.
- On cardboard we draw a grid with a cell size of 25 by 25 millimeters with a simple pencil.
- On the lined cardboard we draw the outline of the future product in the shape of the letter "L". The short side is 14 cells long, 15 cells long, 2-3 cells wide. The contour should be smooth, the middle part and the ends of the blades are rounded. Cut out the resulting cardboard template with a breadboard knife.
- We apply it to a sheet of plywood and trace around the contour with a simple pencil.
- We cut out the blank of the future boomerang with a jigsaw.
- We make a special tin counter-template for shaping the blades.
- We fix one blade of the boomerang in a vice and with the help of a planer we form the profile of the other blade, periodically checking the correctness with the help of a counter-template. We do the same for the other blade. Giving the workpiece a certain profile is a very crucial stage. The quality of performance significantly affects the aerodynamic characteristics of the boomerang.
- We carefully process the workpiece, first with coarse and then fine sandpaper. It is not recommended to use a sander, as it can deform the turned boomerang profile.
- We prime the surface and paint with bright paint. Catchy coloring is necessary for the boomerang to be clearly visible in flight.
It is better to make a boomerang in several versions, and then, based on the test results, choose the best one and use it as a sample. If you don't have plywood on hand, it doesn't matter. Use twisted branches, roots, or even the trunks of small trees, as the Australian aborigines do. The main thing is that the wood is well dried and homogeneous.
Flatten the workpiece with an electric planer, band saw or ax. The further procedure is the same as for the plywood blank. But working with natural material requires certain skills. Due to the peculiarities of the structure, chips and cracks may appear during processing.
