How To Build A Wooden Wind Turbine From Scratch!
Further chiseling is also required to create a twisted shape of the blade along its length. This is necessary for capturing more force of the wind along the blade the width of which changes along its length.
After two days of wood working the blades where finished and now really have the shape they should have, including the airfoil-like shape along the width of the blade.
For the pieces that sandwich the blades, a triangular and a circular piece of plywood have been cut with a jigsaw. Afterwards all the pieces needed some filing in order to bring them into shape and to reduce the risk of chippings.
In order to wind the coils into a specific form a template had to be created and assembled onto a block of wood. The block of wood was then fixed to the vice and by threaded crank shaft, the template could be turned and thus wind the coil into the appropriate form.
The coils moreover have to have a certain amount of windings, so that the right amount of voltage is induced by the changing magnetic field of the magnets.