Restart protection that prevents the tool from restarting if it has overheated or has cut out and been left on. The size of the angle grinder you need will depend on the task you are doing, how regularly you'll use it, and whether it's for occasional, regular, small scale, or professional use. As a guide, use a 115mm angle grinder for precision and finishing work or occasional household use. Use a 125mm angle grinder for regular small-scale tasks and a 230mm angle grinder for large-scale regular work or professional use. Cordless angle grinders are powered through a rechargeable battery. This makes them ideal to use where there's no power supply or when working up a ladder or on scaffolding. And there's no cord to get in the way while you work. On the downside, their battery capacity limits their run time, and they are more expensive and heavier than corded models.

This is another feature that reduces the amount of vibration in an angle grinder. A vibration dampening system is built into the body of the angle grinder near the rear handle. This feature reduces the amount of vibration felt through the handle to increase comfort, especially if it will be used for long periods. Battery fuel gauge LED's - also warns that anti-restart function and current limiter have been activatedThis LED light lights up to indicate that the angle grinder is overheating or if the circuit breaker is triggered. Always clean its internal and external surfaces before using it to ensure it's free from dirt and debris. Corded angle grinders plug into the mains electricity supply to work. This gives them unlimited running time and consistent power. They also tend to be lighter than cordless models and cheaper to buy. However, the cord means you need to be near a power supply to use them, so manoeuvrability and portability are hindered.

The Makita DGA504 is equipped with a highly enhanced Brushless DC motor. A built-in controller changes the cutting speed automatically according to load condition, enabling users to obtain high speed rotation on light duty application/ high torque on heavy duty application. Makita offer compact angle grinders that are small and convenient, helping you to smooth and grind down surfaces with ease. These tools feature a small circumference, so you can use them in tiny spaces, while being light enough that they are easy to handle. Here are some precautions you can take to reduce the risk of accidents while using an angle grinder: Constant speed under load - automatically changes the cutting speed according to load condition for an optimum performance Finally, consider how often you'll use the angle grinder. If it's for infrequent DIY use, you probably won't need as much power as a tradesperson who will use the tool frequently. And if you're a tradesperson, durability will be more important. Of course, your budget is also something to consider.The power source and amp or wattage of angle grinder you need will depend on the tasks you are doing, how regularly you'll use it, and whether it's for occasional, regular, small scale, or professional use. As a guide, opt for a battery-powered angle grinder if portability is important or a corded one for prolonged use. An angle grinder with a power rating of 500-900W is suitable for occasional household use, 700-1200W is ideal for regular small-scale tasks, 2000W is best for large-scale regular jobs, and 2500W is best for professional use. You can cut aluminium to a depth of 30mm with a 115mm angle grinder, 38mm with a 125mm angle grinder or 70mm with a 230mm angle grinder using a cutting disc. Or you can use a diamond blade, but only with a 115mm angle grinder.

Angle grinders are powerful tools that are dangerous if appropriate care isn’t taken. Most angle grinders have built-in safety features, but they vary by model.The power rating of an angle grinder is indicated by its wattage, and the wattage reflects the size of the disc it takes and how fast the disc rotates. Angle grinders are available with power ranges from 500-2500W and disc speeds of between 5,000-11,000 revolutions per minute (rpm). To decide on the best power rating for your needs, consider how regularly you’ll use it and whether it’s for occasional, regular, small scale or professional use. You can cut granite to a depth of 30mm with a 115mm angle grinder or 70mm with a 230mm angle grinder using a diamond blade.