It must always be remembered that woodworking machines, with their constantly varying loads as the cutters strike the hard and soft grain of wood, are gluttons for power, and that portable tools usually rely more on speed than power output or torque for their performance. They should, therefore, never be expected to undertake the heavier tasks which should rightly be given to the large fixed machines. Manufacturers give full and precise instructions and some issue their own handbooks on the techniques to be employed. They are also concerned to make their portable tools as safe as possible, but it is the rough usage to which the tools are often subjected which constitutes the danger, and no amount of foresight on the manufacturer's part can prevent a careless worker standing on a wet floor and trailing bare wires everywhere from electrocuting himself. Given correct treatment, with the wiring periodically checked, properly earthed or grounded, and the motor itself never taxed beyond its stated capacity, the average portable tool will give good service over many years, and become essential in the workshop.
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