How to choose an angle grinder

How to choose an angle grinder

An indispensable tool for having a self-respecting workshop is the angle grinder or Flex grinder. This power tool is used to remove irregularities, polish, grind or remove burrs from materials, as well as sharpen the blades and tips of other tools.

As seen in the professional power tools article, grinders can also be used for both hobby and professional use.

Bench top grinder vs cordless angle grinder

 

Bench grinder

(Or grinding wheel)

Cordless angle grinder

Price and size

· More expensive

· Bench fixing

· Less expensive

· Convenient to use and easy to handle

Type of processing

Professional type processing:

· excellent grinding precision

· excellent results with many materials, surfaces and dimensions

More hobby work:

· good results with few materials.

Power supply type

Power supply by power outlet.

Battery-powered. Available in 3 charging modes: ad hoc, removable battery or batteries.

Grinder features: how to choose the best one

Given the wide choice in the market of tools, for sanding and rounding, you must consider two features that must be fundamental for you to be able to get the best angle grinder, which is right for you.

  • The power of the motor: it can range between 600 and 2,200 watts. For this reason, the choice is made according to the frequency of use and the type of materials of the grinder;
  • The disc types: the grinder discs have three sizes and are chosen according to the work to be done.

Dimensions

Type of work

115 mm

Appropriate for hobby use

125 mm

230mm

Appropriate for professional use

Type of disk

Work performed

Diamond-coated

Adapted for cutting operations

Canvas

Adapted for light abrasion

Brush-type

Adapted for polishing

Abrasive wheels

Adapted for abrasion with high thickness objects


Using the angle grinder: 8 Simple Rules

  1. Checking the autonomy: thanks to the special indicator, you can keep an eye on the charge level in battery-powered grinders;
  2. Changing discs: check the expiry date of the cloth discs and use the most suitable blade for the job;
  3. Keeping a proper grip: use work gloves to get a firm, ergonomic grip during complex work;
  4. Disc compatibility: before starting the disc grinder, check that the grinder accessories are compatible with the tool provided;
  5. Beware of force: in case of the resistance of the material, avoid applying more pressure. This could lead to bending of the disc or dangerous backlash;
  6. Store it inside a case: to prevent the grinder from getting damaged, once you turn it off, store it inside a case. This will keep the power tool from being exposed to moisture in the air and faster wear;
  7. Create a support area: Keeping an object on a stable support will prevent it from becoming unbalanced during machining;
  8. Wear PPE: work gloves and face and eye protection devices are essential when using a small or large grinder.
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