No need for calipers. A ruler will do. Thanks.
With my current blades ("Supremes" - freestyle blades) installed, there is about 1/8" height of thinly ground blade at the bottom (in the orientation we skate in; also maybe it was lightly larger when I started using the blades)), followed by about 1/8" indented portion (Why? I assume it is decorative, or to save a few grams, but if the Pro-Filer like tool didn't have a deep enough gap, it would matter.), followed by a variable width of parallel sided runner, for a total (including the two 1/8" heights) of about 1/2" near the stanchions, to .75" at the center.
Hey, I just figured something out about the
new replaceable runner Matrix RXS blades.
I already knew they made each chassis have one particular non-replaceable toe pick - which means you need a different chassis for each type of blade - whereas the older designs had the same chassis for all runners. The toe picks were included in the runners, as with most blades.
But that non-replaceable toe pick also means you wouldn't want to trim the toe pick when the blade starts to wear down. So you maybe have to replace runners more often...
Interestingly, the RXS ad says you don't need a special blade holder - because
the runners fit all machines. But to take advantage of that, I guess you'd have to remove the runner every time you sharpened it. And it looks like they still attach with those stupid bolts that use the tiny hex inset, that will probably wear out if you do that a lot.