What You Need to Know About Skate
Sharpening
by Eric Neubauer
- How frequently should skates be sharpened?
- Typical sharpening frequencies range from every 5 weeks for a
daily skater to every nine months for a once-a-week skater. In general, skates
need sharpening about every hundred hours of skating as long as care is taken
to avoid damage from stepping on metal, concrete or any other hard or abrasive
material. Pond ice may contain dirt and stones. One accidental step on concrete
will probably ruin the last sharpening. Hard guards and soakers can be used to
protect the blades while walking to and from the ice and when the skates are
carried in a bag. Always dry off the blades after skating to prevent rusting
and make sure the hard guards are also dry if they are going back on the
blades. Skates need sharpening when they start to slide sideways too easily. An
experienced skater can often tell when the skates are getting dull but
beginners can't, so look for feet skidding sideways when pushing or doing
crossovers.
- What do I need to know about getting skates
sharpened?
- The first thing to find out is where. The right place in your
area might be the rink, a skate shop or a sharpening specialist. The simplest
approach is to ask several more advanced skaters where they go. At a minimum
you should make sure that you can get a correct hollow radius and level edges.
If the sharpener doesn't know what a hollow radius is or have a square to check
the levelness of the edges after sharpening, it might be better to go some
place else. The grinding stone is dressed to a circular shape to make a hollow
along the bottom of the blade. The hollow radius usually ranges from 3/8"
(deeper) to 3/4" (shallower). Beginners usually prefer a 5/8 or 3/4" hollow.
Advanced skaters usually use a 3/8 to 1/2" hollow.
- Can I tell if my skates have been sharpened correctly by
looking at the blades?
- You can compare the radius of the hollow with the edge of a
penny. If the penny fits exactly, the radius is 3/8". If it can roll back and
forth a bit, the radius is greater than 3/8". If it touches at both sides but
doesn't reach the bottom, it is less than 3/8" and a beginner will have a lot
of trouble stopping. You can also check the levelness by balancing a pen or
pencil across the blade. If the pen slopes toward either side, the edges are
not level. Two other easy things to check are to make sure the bottom of the
blade curves smoothly from front to back with no sub-curves and that the bottom
toe pick hasn't been ground off. Both of these problems will make the blade
virtually useless for edges, spins and jumps.
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