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Use an angle grinder

The angle grinder is a more versatile machine than it seems, depending on the disc used. The primary purpose - grinding at a varied angle - is also stripping but also cutting with a dedicated disc. Depending on the nature and the grain of it, it can be used to work a large number of materials: metal, masonry materials, wood, plastic, etc. It requires special precautions, including the wearing of gloves and full protective glasses, a dust mask. It must be handled very carefully with specific gestures, to avoid any risk of accident.

By definition, an angle grinder first serves to grind, with a disc of good thickness, abrasive surface, grain adapted to the nature of the material to work. To this functionality is added the ability to cut, cut and cut, this time with a thin disc, whose edge is coated with abrasive material or teeth in connection with the material to be cut. It is essential not to confuse the discs to use, especially never to cut with a grinding disc: the risk of bursting it and debris projection are very important, with a high probability of serious injury. Those who have never used this type of machine can not be too cautious.

Use an angle grinder

Change a grinding disc

Power off

Power off

1. Turn off the device before handling. Here, just drop the battery. If the machine is wired, unplug the machine.

Position the handle

Position the handle

2. The handle of the grinder is interchangeable. It can be placed above or on the sides of the device for a better grip depending on the work to be done.

Take out the crampon key

Take out the crampon key

3. Remove the crampon key from its housing. It will allow you to tighten or loosen the disc.

Disassemble the handle

Disassemble the handle

4. Unscrew the handle to disassemble the disc more easily.

Block the disk

Block the disk

5. Press the lock button on the shaft and rotate the drive until it stops.

Loosen the flange

Loosen the flange

6. Hold down the lock button. Engage the crampon key and loosen the outer flange.

Unscrew the outer flange

Unscrew the outer flange

7. Unscrew the outer flange by hand. Remove the grinding disc.

Unscrew the inner flange

Unscrew the inner flange

8. Unscrew and remove the inner flange. He simply loosens his finger.

Undo the crankcase fastener

Undo the crankcase fastener

9. Undo the protective case fastener. Rotate the protective cover according to the work to be done.

Fold down the fastener

Fold down the fastener

10. Fold down the clip to lock the cover.

Check the rotation direction of the disc

Check the rotation direction of the disc

11. Check that the direction of rotation of the disc and the machine match.

Visualize the direction of rotation

Visualize the direction of rotation

12. The arrows on the machine and on the disk indicate the direction of rotation.

Screw in the inner flange

Screw in the inner flange

13. Reposition the inner flange. Screw it on your finger.

Set up the disc

Set up the disc

14. Set up the selected disc (here a multipurpose disc). Engage it on its axis.

Screw the outer flange

Screw the outer flange

15. Begin screwing the outer flange by hand.

Bring the flange into abutment

Bring the flange into abutment

16. Press the lock button. Rotate the disc until it stops.

Block the disk

Block the disk

17. Secure the outer flange with the spanned wrench.

Screw the handle

Screw the handle

18. Screw the handle into the desired position.

Engage the battery

Engage the battery

19. Engage the battery and orient it to make it easier to grip the camera.

Check the operation of the grinder

Check the operation of the grinder

20. Press the release button and then the trigger to start the machine and check the operation of the grinder.

protections

Wear protections

Wear protections

Always wear protective gloves, wear a respirator and put on protective eyewear.

Cutting and cutting with discs

Diamond disc

Diamond disc

at. Versatile diamond disc for brick and ceramic

Cutting a brick

Cutting a brick

1. Start the brick on the cutting line with the diamond disc.

Finishing the cut with the chisel of mason

Finishing the cut with the chisel of mason

2. Cut the brick with a mason's chisel.

Grinding a brick

Grinding a brick

3. Some discs allow cutting and grinding. This allows a good finish of the cutting surface.

Tile cut

Tile cut

4. The diamond disc allows tile cutting. Interpose a martyr board between the tiles and the workbench.

Clear cut of the tiles

Clear cut of the tiles

5. The cut is perfectly clear.

Disc for concrete and stone

Disc for concrete and stone

b. Disc adapted to concrete and stone

Cup of a block

Cup of a block

1. To cut a concrete block attack the line of cut at the level of a cell.

Start the slab

Start the slab

2. Start the paving stone halfway through its thickness.

Cantilever

Cantilever

3. Place it cantilevered on a metal bar.

Cut the slab

Cut the slab

4. Press down on both sides of the cut line.

Disc for metal

Disc for metal

c. Cutting disc for metal

Cut a hollow steel bar

Cut a hollow steel bar

1. The disc is used to cut a hollow steel bar. Be careful not to leave any flammable product or object in the sparks.

Stripping of metal and wood at the grinder

Disc to strip

Disc to strip

at. Metal etching disc and rust

Strip the metal

Strip the metal

1. Slowly advance the disc onto the surface to be stripped (here a cast iron cover).

Exposing the metal

Exposing the metal

2. Progress the disc until the metal is completely exposed.

Disc for wood

Disc for wood

b. Disk stripping wood and paint

Strip the varnished wood

Strip the varnished wood

1. The grinder allows rapid pickling of varnished wood...

Strip paint

Strip paint

2.... or multiple layers of paint in one operation.

Put the wood bare.

Put the wood bare.

3. Progress slowly without giving any angle to the board to avoid marking the wood.

Disc for metal

Disc for metal

c. Metal finishing disc

To abrade a weld

To abrade a weld

The grinder allows the abrasion of surplus solder or solder.

Warning

The angle grinder is a potentially dangerous machine if it is misused:

  • Never use grinding discs for cutting materials (unless specified by the manufacturer).
  • Always wear safety equipment (gloves, mask and glasses).
  • Always switch off the machine when handling it (changing a disc, changing the crankcase position).
  • Only use discs that are suitable for the materials to be worked.
  • Never use discs that are too worn.

(photos / visuals: © DIY-Prod, except special mention)

On the same topic

  • DIY tips
    • Metal cutting and grinding
    • How to cut metal with shears and disc?

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Video Instruction: How to Use an Angle Grinder