Length - 08:33 The concrete grinder, combined with a variety of concrete blade options, is like an artist's brush for decorative concrete contractors. When used properly, skilled contractors can create freehand designs and intricate patterns. When selecting the proper grinder for your toolbox, consider how it feels in your hands as well as the RPMs (revolutions per minute). You should have a very high RPM grinder for cutting in concrete. This smooths out the joint and prevents the blade from wobbling while it is spinning. Different designs can be created by changing to varying sizes of blades. Blades typically come in 2 inch and 4 inch sizes in addition to numerous blade widths: 1/16 inch, 1/8 inch, and 1/4 inch. Professionals often use a continuous rimmed blade (no segments) to create a smooth grinder cut. Be sure the blades you are buying have high quality diamonds. Use the tools that come with the grinder to change the blades. You may also want to try using a crack-chase blade to make decorative cuts. This makes a V-groove in the concrete and is used for free-form art. Make sure you take the proper safety precautions including eye protection, ear protection, gloves, and a dust mask. Many contractors use a shop vacuum to capture any dust that the grinder throws off. And lastly, don't be afraid to get creative with your grinder.
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