Working Advice

  • Pull the plug out of the socket before carrying out any work on the power tool.
  • Exercise caution when cutting slots in structural walls; see the "Information on structural design" section.
  • Clamp the workpiece if it is not secure under its own weight.
  • Do not load the power tool so heavily that it comes to a stop.
  • If the power tool has been subjected to a heavy load, continue to run it at no-load for several minutes to cool down the accessory.
  • Do not use the power tool with a cut-off stand.
  • Do not touch grinding and cutting discs until they have cooled down. The discs can become very hot while working.

Rough grinding

  • Never use cutting discs for rough grinding.

The best rough grinding results are achieved with a set angle of 30° to 40°. Move the power tool back and forth with moderate pressure. This will ensure that the workpiece does not become too hot or discolour and that grooves are not formed.

Flap Disc

With the flap disc (accessory), curved surfaces and profiles can be worked. Flap discs have a considerably higher service life, lower noise levels and lower sanding temperatures than conventional sanding sheets.

Cutting Metal

  • Always use the protective guard for cutting (8) when cutting with bonded abrasives.

When carrying out abrasive cutting, use a moderate feed that is suited to the material being machined. Do not exert pressure on the cutting disc and do not tilt or swing the power tool.

Do not attempt to reduce the speed of a cutting disc coming to a stop by applying pressure from the side.

The power tool must always work in an up-grinding motion. Otherwise, there is a risk that it will be pushed uncontrolled out of the cut. For best results when cutting profiles and rectangular tubing, start at the smallest cross section.

 

Cutting stone

  • Provide sufficient dust extraction when cutting stone.
  • Wear a dust mask.
  • The power tool may be used only for dry cutting/grinding.

For best results when cutting stone, use a diamond cutting disc.

When using the extraction guard for cutting with a guide block (17), the vacuum cleaner must be approved for vacuuming stone dust. Suitable vacuum cleaners are available from Bosch.

Switch on the power tool and position it with the front part of the guide block on the workpiece. Move the power tool with a moderate feed motion that is suited to the material being machined.

When cutting especially hard materials such as concrete with a high pebble content, the diamond cutting disc can overheat and become damaged as a result. This is clearly indicated by circular sparking, rotating with the diamond cutting disc.

If this happens, stop cutting and allow the diamond cutting disc to cool down by running the power tool for a short time at maximum speed with no load.

Working noticeably slower and with circular sparking indicate that the diamond cutting disc that has become dull. You can resharpen the disc by briefly cutting into abrasive material (e.g. lime-sand brick).

Information on structural design

Slots in load-bearing walls are subject to DIN 1053 part 1 or country-specific regulations. These regulations must be observed under all circumstances. Seek advice from the responsible structural engineer, architect or construction supervisor before starting work.