If you have Minnie children – protect them from an accident by a gas or electric stove protective “fence” of wire or duraluminium corners.
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RIVET YOUR HANDS
If the steel bar drill a hole the same shape of the desired rivet, its manufacture takes only a few seconds, two or three blows with a hammer to cut aluminum wire inserted in the hole,...
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An extremely important piece of technology in the manufacture of engines is the coating of the friction elements of the antifriction alloys or metals. This thin layer, except for the...
