Actually I KNOW I need a sharpening, but it's always tactful to open the conversation with "I think." I can tell the instant I skid a turn whether more knee bend will fix the skid, or I need a sharpening.
He ran his thumb across it. "It's close enough, yeah, I can go ahead and do it. You wanted 7/16?"
I'm skating on 1/2" radius of hollow now, because in warm weather, I just float through my turns. But in the winter with hockey season on, the ice is as...cold as ice...hockey ice. With hard cold ice, a tighter radius of hollow gives you a grippier blade.
I bite my lower lip, and my sharpener can read my mind. I'm worried that 7/16 will be waaay too grippy. I'm not jumping, and I don't have that much speed. Too grippy can stick me like glue.
"What if," my sharpener says, "I split the difference."
At this point, I have to do 4th grade arithmetic (well, 4th grade in the 1950s. GOK when kids today learn fractions. High School?--moving on). If he's going to split the difference, that means he has to halve the measurement...so we're now in 32nds.
"Uh, 15/32nds?" I pause then say hoarsely, "Kinky."
Knowing my blades and
understanding technical issues