I have worked for a short time in a ski shop for free for I wanted to learn how they prepare skis (edges, wax, structures, etc..). and they prepared a lot of skis for racers.
Slalom (no bevel, 3-5 degree sides). However, this kind of preparation could "distroy" anybody who is not an excellent skier, almost a pro. Once
on edge a ski prepared this way will not come out easily if you are not technically very advanced.
GS (0.5-1 degree bevel; 3-5 degree side). Probably too much for an average skier.
SG, DH (0.5-1 degree bevel; 3 degree side)
One other thing that must be kept in mind is that when you create these high angles on the sides, they are difficult to keep and you consume a lot of the edges. Same, as HH mentioned, for small angles when you do the beveling.
My Head are 1 degree bevel and 2 degrees on the side. Pretty mellow
but good enough for me. I do not race in the WC or at a lower level, and
I prefer to keep my ligaments as they are rather than risk them for a more extreme turn. Then one never knows really, but ...
Interested in the right tools to do it yourself and swear a lot?
Check this site out:
http://www.race-werks.com/store.php?cat ... b_cat_id=9
I do not think that you will ever put your hands on a stone grinding machine unless you do it for a living (they are very expensive) but
if you are interested in creating your own structures on the bases of your
skis I can suggest a few websites. It is an art like that of tires in F1 races. Little structures on cold snow, larger structures on wet snow.... Kind of fun really. But if it is done badly it can damage your skis or reduce their life spans considerably.