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4.1 Basic technique


4.2 Horizontal, vertical & pipe cutting


Cutting techniques

Here’s how to make horizontal and vertical cuts as well as cutting pipes. Watch the video to the right or read the instructions below.

Horizontal cutting:

  1. To start with, mark where you should cut.
  2. To cut horizontally, start by making a guide cut approximately 2 cm deep. Cut from left to right, to have a clear view of the cutting line.
  3. Then go deeper, using step cutting, approximately 5 cm deep at a time.

Vertical cutting:

  1. To cut vertically, start by making a guide cut approximately 2 cm deep. Cut from the bottom to the top, to have a clear view of the cutting line.
  2. Then go deeper, using step cutting, approximately 5 cm deep at a time. Cut from the top to the bottom. Always maintain full speed for best cutting performance.

Pipe cutting:

Always cut pipes in the following three steps.
  1. To cut a pipe, start by cutting the top.
  2. Then cut one side of the pipe from the top to the bottom.
  3. Move to the other side and cut the remaining part of the pipe, from the top to the bottom.

4.3 Wet cutting


We recommend you to use water where possible. Wet cutting is better for you as an operator, the surrounding environment and the machine.

4.4 Dry cutting


We recommend that you use dry cutting for only a short period at a time. The reason for this is, that a dry cutting diamond blade needs to cool down occasionally to keep from being over heated and damaged.
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4.5 Kickbacks & pinching


Minimising the risks of kickbacks & pinching

A kickback is the sudden upward motion of the power cutter that can occur if you stall t he blade in the wrong way. Another hazardous situation is when the blade is being pinched. Watch the video above or read about how to minimise the risk of kickbacks and pinched blades.

  1. Never user the blade’s upper quadrant, the kickback zone, for cutting.
  2. If you’re using the blade’s kickback zone to make a cut, you might be exposed to a climbing kickback.
  3. When you’re cutting a block or a pipe on the ground, make sure that the material is properly supported and can neither move nor roll during cutting. Also make sure to place the cut right to avoid the blade being pinched.
  4. If the cut closes and the blade is pinched, this could cause an aggressive reaction force that makes you lose control of the machine.
  5. Be careful when you insert the blade in an existing cut. If you don’t insert the blade straight it might become pinched and cause a kickback.

4.6 Blade problems & blade sharpening


Stay sharp with blades in great condition

When blade problems occur they are often caused by the wrong blade being used f or the wrong job, the blade being used incorrectly or if there’s an equipment fault. Here are some examples of blade problems:
Trouble shooting

Loss of tension.

Some possible causes: the blade is too hard in relation to the material being cut or the blade is used at the wrong speed of rotation. Recommendation: change the blade.

Trouble shooting

Cracked segment.

Possible causes: the blade is too hard for the material being cut or the cutting speed is too fast. Recommendation: change the blade.

Cracked centre plate.

Some possible causes: cutting pressure is too high or the blade has overheated due to inadequate water supply. Recommendation: change the blade.

Trouble shooting

Eccentricity.

Some possible causes: the bond is too hard for the material being cut or the spindle bearings are worn. Recommendation: change the blade.

Glazed.

Possible cause: the blade hasn’t had adequate pressure when placed against the material being cut. Recommendation: sharpen the blade.

Regain sharpness

A diamond blade can become dull when the wrong feeding pressure is used or when cutting certain materials such as heavily reinforced concrete. To sharpen the blade, cut in a soft material such as sandstone or a brick.
W 1400-series