Should I be using re-edging tools like a Sweet Stick? Sharpening your skates involves passing them over a spinning stone with a rounded outer surface. This surface can be modified to have a very curved surface resembling a segment of a small circle, or it can be flatter, resembling part of a larger one.
A larger radius will mean a flatter grinding wheel, and therefore a skate with less hollow cut away from its centre. In the pictures here, you can see what these hollows look like when viewed up close. A deeper hollow lets the blade sink farther into the ice, slowing the skater but providing more control. Conversely, a shallower hollow lets a skater go faster but requires more skill.
Another factor is weight. Your observational skills will tell you more. If your youth player is suddenly gliding less often and always seems to be churning, inspect those blades. If another player seems to have become inexplicably quicker, or yours inexplicably clumsier, consider getting those skates sharpened. All of us, young or old, will benefit from regularly sharpening our skates. Feeling connected to the ice bolsters confidence.
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It determines how deeply the blade cuts into the ice and what type of sharpening will best suit the player. This is why I recommend not to sharpen your blades too much for young hockey players. Scientifically, the lighter the player is, the less ice is melted by their blade. So why should you get your skates sharpened? Because it improves your push and glide, allows you to generate speed better, and reduces your chances of falling. A sharper blade can cut into the ice more easily.
Not sharpening your blades can severely lower your game, and it can even be dangerous. For example, say you like to go very fast and stop, spraying ice on the boards. If you lose your edge while doing that, you might slip out and go straight into the boards. Skates are sharpened by running the blade across the center portion of a spinning grinding wheel. The wheel removes material from the skate, creating a hollow groove in the middle and making it sharper.
By adjusting the face of the grinding wheel, we can choose to make the hollow deep or shallow. Take a look at your blade.
Hollow refers to the cut or depression in the blade. When we sharpen the skates, a hollow groove is carved into the center of the bottom of the skate blade. The deeper the hollow is, the more pronounced your edges will be. The hollow directly affects your skating performance. Another thing to understand is the radius of the hollow. The radius is how you measure the depth of your hollow. If a blade has a huge radius, it means that the hollow is relatively shallow.
A deep hollow means a small radius. More surface area comes in contact with the ground, allowing it to carve deeper into the ice. This provides extra grip and the ability to hold very tight turns. On the contrary, a shallow hollow means a larger radius. Less surface area of the blade makes contact with the ground, giving you less grip. Since a smaller portion of the blade cuts into the ice, you will have less friction opposing your movement.
The question you need to ask yourself is whether the edges are sharp enough for your skating or too sharp to suit your style. Thanks, I now know everything about the physics of skate blades.
But how will any of this help me decide how to sharpen them? Fair enough.
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