Bike pedals used to put a metal screw cap to protect the bearings from contamination. Now, instead, use the plastic plugs, which are often lost. Rescue plastic or nylon tubes from medical bubbles. Such substitutes being kept quite steady.
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Restraint solder radiodetal tweezers also serves as a heat sink. With the same purpose and possibly the use of clamp type "crocodile", if it is put on the output of the semiconductor ...
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In many CUT and suit (clubs and centres for young technicians) a section of the kart. Little machine not only helps children to learn the overall concept of the car and learn the basics...
