Full Line Catalog Page 408 Power Tools, Equipment, Accessories

CHOOSING THE RIGHT DIAMOND BLADE SM Stay sharp with blades in great condition. When blade problems occur they are often caused by the wrong blade being used for the wrong job, the blade being used incorrectly or if there is an equipment fault. Here are some examples of blade problems. 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. 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 center plate. Some possible causes: cutting pressure is too high or the blade has overheated due to inadequate water supply. Recommendation: change the blade. 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: change 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. Aggregate Classification Soft Medium Soft Medium Medium Hard Hard KICKBACKS AND PINCHING HORIZONTAL, VERTICAL, AND PIPE CUTTING A kickback is the sudden upward motion of the power cutter that can occur if you stall the blade in the wrong way. Another hazardous situation is when the blade is being pinched. 1. Never use the blade's upper quadrant, the kickback zone, for cutting. 2. If you are using the blades kickback zone to make a cut, you might be exposed to a climbing kickback. 3. When you are 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 may become pinched and cause a kickback. 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. SELECTING THE RIGHT DIAMOND BLADE FOR YOUR AREA MOH'S RANGE DESCRIPTION AGGREGATES 8-9 Critically Hard Flint, chert, trap rock, basalt 6-7 Hard Some river rock, some granites, basalt, quartz, trap rock 4-5 Medium Hard Some granites, some river rock 3-4 Medium Dense limestone, sandstone, dolomite, marble 2-3 Medium Soft Soft limestone Diamond Blade Performance PROPER TECHNIQUE SUPPORTS SAFE CUTTING DIAMOND BLADE TROUBLE SHOOTING 800.944.8322 The MOST KNOWLEDGEABLE PROS in construction supplies 408

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