![]() When using a Type 27 (flat) profile flap disc, for example, use lower grinding angles (5 to 15 degrees) and lighter pressures. Fast, choppy strokes typically produce less-than-optimal results, while longer, slower strokes allow the grains to do the work.Ĭhanging the position and angle of the tool in relation to the workpiece can greatly affect product performance, efficiency, and life. This is especially true when using ceramic grains. The rate of movement across the work surface can also have an impact on performance. If you can hear the RPM of the tool drop or hear and feel the motor straining and bogging down, you are likely applying excessive pressure. One telltale sign that indicates you are using too much pressure is an audible drop in RPM. Light pressure that allows the wire tips to do the work is best when using wire brushes. With wire brushes, applying too much pressure puts stress on the wires and causes the filaments to break, which is a safety hazard that also shortens product life. It also generates heat, which ultimately causes the product to break down more quickly. Adding extra pressure actually dulls the grains even more, reducing their ability to cut. This is counterproductive to product performance and life, as well as safety. ![]() If you feel the tool isn’t performing as it should, you may respond by applying more pressure. This prevents using the wrong size accessory on the tool.Īpplying the appropriate pressure and letting the tool do the work plays a huge role in achieving optimal performance. But when accessories don’t fit the tool, they can run out of balance and vibrate excessively, causing loss of control or accessory failure.Īs a safety best practice, always keep the guard in place while operating the tool. Some may think the larger wheel or disc will provide a deeper cut or longer life, or perhaps it’s the only product on hand. The product’s RPM rating should always be equal to or greater than the RPM rating of the tool it’s being used on.Īnother common mistake is using a brush, disc, or wheel that is the wrong size for the tool. cutting and grinding wheel is typically rated at about 13,000 RPM. right-angle grinder is typically rated at 11,000 RPM, while a 41⁄2-in. Just because a product fits on a tool doesn’t mean it can be used on that tool safely.įour key factors that help ensure safe product operation are speed and size, pressure, orientation, and time (S.P.O.T.).Īny tool or product designed for cutting, grinding, or finishing is marked with a maximum RPM rating. Preventing injuries also saves operations time and money, and using wire brushes and abrasives properly can result in performance and efficiency benefits that impact the bottom line.įour key factors help ensure safe product operation: speed and size, pressure, orientation, and time (S.P.O.T.).įor safety purposes, you should always match the speed rating and size of the wire brush or abrasive product to the tool. Reducing the potential for personal injury is always the most important goal. But when pushed beyond the conditions of their design, these products can pose danger to you, your co-workers, and the equipment around you. When a product or tool isn’t performing as expected, it’s natural to want to take it upon yourself to adjust form or technique to make the product do the job. It’s human nature to do whatever it takes to get the job done. Because safety tips and best practices can vary by tool (die grinder, right-angle grinder, or bench grinder) and by product type (bonded abrasives, coated abrasives, and power wire brushes), it’s important to know what the safe operational practices are for each tool and product type.
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