Old saw blade for metal can still be of use if, instead ground off the teeth to make a sanding disc edge. This painting, like a plane, it is convenient to process parts made of wood and foam.
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EMERGENCY UMBRELLA
Many umbrellas of the spoke ends plastic ferrules, to which the threads are attached to the edge of the fabric dome. When threads are ground, loosely fitted tips lost, and the proper...
CALCULATION OF SCREWS
To build templates of the screw (side view) for a given shape of the blade (top view) and the step there are two main methods of calculation: analytical and graphical. Usually based on...
