A roll of soft rags or foam rubber, emery paper wrapped, simple and perfectly working device for sanding curved surfaces, whether wood or metal. And the same skin in combination with two plates in it, fortified at a right angle to each other, help out in cases when you need to sand the surface of the angle or corner joint of a part or product.
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SPRING — ANY
Here's a simple device, which you can use per minute to make any small spiral spring. A u-shaped bracket with the rows of holes and some steel tap wrenches of different diameters — all...
THE TIMER FOR THE ROCKET
Easy, reliable and accurate timer — "blue dream" any rakatomalala acting class S3. These models are run for a maximum duration of the flight. And sometimes, once in the upward air flow,...
