When you do not have a suitable spanner to Unscrew the hex-head bolt will help out any screw with two nuts — preferably square-shaped.
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THE RADIATOR FOIL
Fast and simple — to manufacture heat sinks for transistors and microcircuits made of copper or aluminum foil with a thickness of 0.1—0.3 mm. Plates are cut with scissors, carefully...
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In addition to the hourglass, there are more structurally similar water. Their simplified version can be made and most. Enough to take two graduated bottles for baby food and to connect...
