Used the "X-grind" wheel for the first time last night. Toward the end of the game, I came to the bench to change and one of our wingers told me to go out for him the following shift because he'd blown an edge and it wouldn't hold at all. After the game, he showed me his skate and sure enough there was a 4" long or so section of his inside edge that was completely blunted. I ran two passes with the X-grind and the defect was no longer visible. I'm guessing it removed somewhere around .010-.015" based on eyeballing the damage beforehand, just a guess though.
Steve, out of curiosity, is there an average/estimate on how much each pass of the X-grind wheel removes?
I marked the fresh flat surface with a black sharpie and ran his requested 1/2" for 6 passes. (I believe Sparx recommends running 10 passes after using the X-grind.) There was still a very fine black line visible on part of both edges, so I ran another 2 passes and it was gone. The recommended 10 passes is probably the safe number, but 8 seemed to suffice here. I mirrored the same process on both skates to keep things even. We'll see what his feedback is this Sunday night!