A double-sided grinder, otherwise known as a double-blade grinder, is a grinder with two blades rotating in opposite directions. The first spinning blade is usually called a fixed blade, while the other rotating blade is called a variable blade.
The variable blade features both a fixed and variable speed for grinding. The variable blade is more versatile than the fixed blade, as it can be used for a variety of tasks that the fixed blade cannot perform. The variable blade is often attached to a table with the use of an electric motor; in this case, a blade guard is attached to prevent the blade from coming into contact with the operator’s body.
The fixed blade is similar to the variable blade, only it is mounted on a rotating drum that rotates in the same direction as the grinds. A variable blade grinder has a single rotating drum, which is the same size as the fixed blade. Variable blades feature two speeds, which means they can be used to speed up and slow down the grinding operation. Some models feature a manual switch that allows the operator to alter the grind speed between low and high, thus allowing the operator to grind either coarse or fine material with relative ease.
Double-sided grinders allow operators to grind various types of materials with very little effort, as they are designed to do so. Most grinders feature a one-step grinding operation that includes a grinding wheel, a rotating drum, a rotating bar, a cam mechanism and variable speed control, which allow the operator to adjust the grind speed from low to high without slowing the operation down.
The blade is made of steel and is typically covered with plastic, especially if the blade is made of a variable blade model. The plastic covering is necessary because it prevents the blades from rusting and also provides additional strength. When used for grinding coarse material, a steel blade should be replaced after several uses because steel tends to get dull after continuous use.
Many grinders for metal materials are available on the market. They come in a range of prices, which will depend on the number of blades, the type of grinders you need, the type of work you intend to perform and the kind of grinding you want your machine to perform.
Blades made of steel are preferred because they have a good grip on the workpiece and are less likely to be damaged by rough handling. Steel blades tend to cost a little more than plastic blades, but the quality of the steel can be maintained by regular cleaning. The grinding wheels of the machine need to be cleaned on a regular basis in order to prevent rust from occurring, which could weaken the wheels and cause the grinding operation to malfunction. If possible, grinders should be stored in places that will not be exposed to extreme temperatures and moisture.
Metal grinding equipment can be bought at local stores or online. They can be purchased from a variety of manufacturers, including Bosch, Weber and KitchenAid.