The bench grinder is an indispensable tool for both DIY enthusiasts and professionals. This appliance can be used for multiple purposes, including sharpening, performing weld finishing, and preparing for polishing... There are two main types: the dry stone grinder and the mixed grinder which combines the functional aspect of the first with that of a water stone.
Some bench grinders have a tank for cooling the metal heated by grinding as well as another one for drills. The basic equipment for all grinders includes: a motor with a grinding wheel at each end, a tool rest, and protection screens against projections towards the face. There are also models that additionally have unbreakable polycarbonate screens, spare grinding wheels, and a lamp. Sometimes, the presence of a casing that encloses the grinding wheels can be noted. The transparent polycarbonate screens are very convenient to avoid projections, however, it is highly recommended to preserve one's eyes with safety glasses for optimal security. The performance of the device depends essentially on the size of the grinding wheel to be driven: the larger the size, the more powerful the motor needs to be. Finally, know that for more sustained use, it is preferable to choose a dimension larger than 125 mm, otherwise this category is amply satisfactory. Numerous brands offer bench grinders, including Fartools, Sidamo, Ribimex, Dewalt, and Einhell.