When buying a power cutter, there are three particular things to keep in mind:
Power cutters for cutting concrete, asphalt and metal are available in many different sizes. Hand-held cutters are designed for easy transport and convenient operation and for cutting various types of materials in demanding environments. Especially when cutting in concrete, the machine is subject to highly-abrasive dust, which is why it's important that the machine has a very efficient air purification system, to protect the engine. When wet-cutting, much of the dust is kept down, and also the life of the cutting disc is increased because it is cooled.
Power cutters are some of the heaviest of the hand-held tools. That's why ergonomics and manoeuvrability are so important. Low weight, a slim engine body and low vibration levels are essential qualities. The handles are designed so the user holds the machine at approximately shoulder width, for comfortable handling, whether cutting horizontally or vertically. The belt tension and blade guard are easy to adjust, for improved efficiency.
It’s essential that the engine is high quality. The cutting arm should be sealed against dust and water. Efficient air purification decreases the risk of internal wear and in combination with air filter compensation there is less risk of the work having to be interrupted due to a blocked filter.