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Understanding Traditional Sharpening
Traditional sharpening uses a grinding stone to create a groove or hollow between the edges of the blade. The depth of this hollow determines the performance of the skate and is a matter of individual preference. Simply put, the deeper the hollow, the more blade digs into the ice. This creates "bite" but the trade off is that it decreases the ease of your glide. So you basically have to choose between gliding speed and grip.
FBV: The Best of Both Worlds
Flat Bottom V eliminates the need to choose one benefit over the other, with a breakthrough architecture designed for the perfect blend of speed and agility. The flat bottom shape of the blade allows the skate to glide across the top of the ice rather than cut through it. This reduces drag and helps increase speed. At the same time, the precision edges are ready to dig in and provide precise control on turns and stops. The result is a revolutionary, no-compromise blade sharpening technique that allows you to skate faster with less effort and experience precise control on turns and stops, so you get maximum glide all the time.
The secret: the Blackstone SPINNER SYSTEM. This breakthrough new coated
disc system dressed the radius and shape of the grinding wheel so that
it can create sharpening on the bottom of the blade. The Flat bottom V
system does not alter rocker radius or remove any more steel than
conventional sharpening. Another advantage is that you can "fine tune"
the combination of speed and agility that's right for you. Initial
testing and feedback tells us that 90/75 is relative to the edge of a
traditional 5/8" circular hollow and the 100/75 setting to the edge of a
1/2" to 3/8" circular hollow. However the skating sensation is so
superior to what you're used to, you have to experience it on the ice to
know which one is best for you. Simply by noting the setting of your
sharpening before you take to the ice, you'll know which aspect to dial
up or down to get the balance that best suites your skating style and
personal preferences. Most skaters feel that 90/75 is a good starting
point and from there you can work with a Dave's Sport Shop professional
sharpener to decide if you prefer the edges to be more or less sharp.