bob does make alot of sense when you talk too him, hes very knowledgeable. ive even had one customer who didnt believe me when i was talking about the benefit of having a smooth edge.so i called up bob and luckily the trainer of the detroit red wings was there paul boyer who thoroughly believes in M-E. Id like to have my skates contoured by M-E to see how it is just for fun. Needless to say the customer was astonished about what he was told and now believes in the stoning of the skate blade before each game. the one sharpening technique i believe to not be that great is the laser sharpening