Originally Posted by Atomicman
You've got it! 3 is 87 or 93 depends on the company
SVST is 90,91,92,93 for side edge bevelers
some are 90,89,88,87
While it's true that some comanies measure the angle from different directions, a 1/3 bevel would be an 88 degree edge. A 1/1 bevel would be a 90 degree edge, and a 1/0 would be a 91 degree edge. This is as a measurement of the true angle of the edge itself.
the first number is the amount of bevel angle on the base edge, as measured from flat=0. The second number is the side edge bevel, as measured from perpendicular to a flat base, not as compared to the bevel of the base edge.
So start with 0/0 = a flat base edge and a 90 degree edge. A 1/1 and a 2/2 would both also result in a 90 degree edge.
Usually a 1 degree base edge is preferred by most, but I keep mine flat.
Then, on the side, a 2 or 3 degree edge angle is going to create an 88 or 87 degree edge if you have a 1 degree base bevel.
I use 0/2.5. Why 2.5? Dunno. I originally couldn't decide between 2 or 3, so I split the difference, and am happy with it.
You should find out how your skis get beveled from the factory. These days, they come with pre-beveled edges in many cases. Otherwise known as the "factory tune". This is especially important for brand new skis and setting them up the first time. I ski on Dynastars, which come 0/0, but with a base edge that's recessed below the base by .4mm. This is basically not re-producable when you tune them, so I don't touch the base edges on my new skis. When my skis are a year old, I'll have a shop stone grind them flat. When I get my new skis, I immediately put the side edge bevel on. One thing I recently learned, is that it's a lot easier to get a sidewall planer to remove the sidewall material before you go at it with the file/edge guide to get your desired bevel, because it gunks up the file pretty good by trying to file the sidewall material down with the edge.
When doing a first side edge bevel, the idea of running a sharpie down the side edge is a good one. That way, it's easy to see how fast you are filing away the edge as the marker disappears from the top (top being the bottom when the ski is upside down) of the edge toward the base. You can also tell by looking for the file markings on ths side edge if you don't use a marker, but it's harder to see, especially if you don't have good lighting.
if you have old skis laying around, practice on those before you start hacking away at your brand new sleds!