(We are often asked about the correct use/techniques for diamond blades. We acknowledge the information held on the Marcrist website and used here by permission of the authors)
Q. Can I cut any building material with a diamond blade?
A. Yes, but not with one blade. There are numerous types of diamond blade, each designed to cut different kinds of material. If the right blade is selected there shouldn’t be any problems.
Q. What’s the best way to use a dry diamond blade
A. While cutting use a pendulum type motion and bring the blade out of the cut frequently
Q. Should I use a guard with my diamond blade?
A. Yes. It’s extremely important to ensure you guard the diamond blade correctly at all times. For dust free cutting use a dust guard.
Q. Can I get a diamond blade to fit any machine?
A. Yes, the Marcrist range covers all popular cutting machines. Specify the bore required when ordering
Q. Can I use a diamond blade for side grinding as well as cutting?
A. No, using a diamond blade for side grinding can be extremely dangerous, as the blades are only designed to cope with forces associated with cutting.
Q. Should the diamond blade be mounted in any particular way?
A. First of all always ensure that the blade is correctly mounted on the cutting machine. When performing the cut ensure that the material being cut is secure, and that the cutting tool is held steady. Gently move the blade back and forth along the cut, ensuring that the blade does not twist. Do not apply excessive pressure to the blade, as it should always be allowed to cut in its own time. This will increase the performance and life of the blade.
Q. Is it better to cut deep or shallow?
A. Shallow cuts result in faster cutting speed and a longer disc life. Deep cutting (single cut) leads to slow cutting speed and a shorter life or possibly to disc overload.
Q. How fast should the feed rate be?
A. Don’t push hard, let the blade and the weight of the tool do the work
Q. My diamond blade/core has stopped cutting what can I do
A. First of all check the blade is not worn out. The wearing diamond tip is only on the first few millimetres of the blade. The most probable cause is that the blade has polished (or Glazed) Run the blade a few times through some abrasive material to dress (expose) some new diamonds, alternatively use a diamond dress stone and use the same technique
Q. When should I use a continuous rim blade as opposed to a segmented blade?
A. Continuous rim blades offer fast and more precise cutting. These blades are a lot more effective when cutting fragile materials such as roof tiles, as the tile is far less likely to break due to the reduced vibrations.
Q. Should the diamond blade be mounted in any particular way?
A. Yes, the blade should have an arrow on its core (the steel middle of the blade); this arrow should always follow the direction of rotation. If the blade has already been used, this arrow may have worn away. In circumstances like this the direction of rotation may be identified by inspecting the segments. A close look at the diamonds within the segments will show that the diamonds have what resembles a comet tail to one side. The blade should be mounted so that the diamond always leads the comet tail when rotating.
Q. Can I cut circles/radii with a diamond blade?
A. Marcrist have developed special curved blades for achieving this
Q. Blade is twisted after use, what is the cause?
A. There are several possible causes,
Blade being used on misaligned saw.
Blade is excessively hard for the material being cut, creating stress on the steel centre.
Blade improperly mounted on arbor shoulder hence becoming distorted when flanges are tightened.
Blade being used at incorrect RPM.
Material slippage causing blade to twist and become kinked or bent
Q. Why does my blade have more diamond on one side of the blade than the other?
A. The Blade is worn out-of-round due to bad bearings, worn arbor, missing bushing, arbor hole larger than arbor, cleanliness of or damage to flange surfaces or excessive dulling condition.
Previous：When Do You Replace a Worn Out Diamond Blade? Next：The Benefits of Circular Saw Blades
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