Grinding Wheels from Craft Supplies USA. The Doc Replies: A common mistake when using CBN wheels is to choose a grit size that’s too large and then take drastic actions to cope with it. We offer a wide selection of 6" and 8" grinding wheels in various sizes and composites. Unlike conventional wheels, they don’t require dressing to clean and true them, so make less dust, and they don’t wear down to a smaller diameter. Look for the Cubic Boron Nitride (CBN) wheels, because these kinds of wheels are the most suitable for sharpening high-speed steel (HSS) chisels. They are the latest must-have kit. A grinding wheel is a precision tool with thousands of cutting points on its surface - abrasive grains that are held in place by a bond matrix (hence these are known as bonded abrasives) and separated by pores.. After dressing with a diamond tool, a CBN wheel, regardless of how it’s dressed, is dull and takes a while to break in and become sharp. These pores are hollow spaces between abrasive grains and the bond , which help with the clearance of discarded metal chips in the grinding process. The proper grinding wheel is essential in obtaining the perfect grind on your woodturning tools. CBN (cubic boron nitride) grinding wheels have advantages for grinding woodturning tools. Norton SG grinding wheels are very aggressive while cutting cool and clean. Generally, bench grinders come with aluminum oxide wheels, but if you want to achieve the best result, you can buy at least a single CBN Wheel for your bench grinder.
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