In the end, and in the long run, hollow grinding is almost always superior to flat grinding except for very specific purposes! It provides cutting relief and it provides a much easier sharpening experience for a much longer time than flat or convex grinding! Hollow Ground Blades Versus Flat Or Convex Blades?
I work mostly in the flat grind camp but, a recent commission has me looking at several feet of hollow ground blade that I wish to sand by hand. With a flat grind it is easy to alternate the direction of the scratches on the steel so the scratches from the previous grit show up well. With the hollow grind it is not so easy.
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Rather than hone all of the bevel surface of a flat ground blade you create a micro bevel by simply increasing the bevel angle of the blade by about 1º, effectively honing just the tip. The quickest and surest way to hone either a hollow or flat ground blade is with a honing guide. This micro bevel is very easy to maintain.
A Hollow Grind is found on a knife like the Buck Woodsman because it39;s ideal for skinning. Full Flat Grind. The flat grind is the simplest type of grind, but it comes in three main varieties. The first is the Full Flat Grind. The Full Flat Grind begins tapering to the edge from the spine evenly on both sides.
Clipper Blade Sharpening. You can search for hours on end on the internet to find out exactly how a blade should be sharpened. Company A will say all blades should be ground flat, company B will say all blades should be hollow ground, company C will say all blades should be flat lapped and company D will say all blades should be hollow lapped.
Traditionally speaking a hollow grind was applied by pushing the side of the blade to a large, spinning, grinding wheel. Because of the curve of the stone a hole would emerge which would stretch out over the entire length of the blade. The advantage of a hollow grind is that the edge can become incredibly thin.
All else being equal , the hollow grind will be better on shallow cuts that do not exceed the height of the grind, since cutting ablity in those instances is determined by the edge and how much material is directly behind it, while the flat grind will perform better on deeper cuts that put the entire blade width into the cut.
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Radius of Hollow or Hollow Grind. When skates are sharpened, they are hollow ground creating a concave surface with two distinct edges. The edges give the skater the ability to control the skates for turning, stopping, and starting. This hollow grind makes it easier for the edges to bite into the ice.