Thats the most silly thing you could do mate.Zoo pads really do suck in wet weather :cough: and in gerneral There is not a special technique to grinding a wheel.just drag the grinder across it relitively fast and make sure all the smooth braking surface is gone.If your going to get some winter pads get some from the koxx range , heatsinks or E-mail Mike Singleton and get him to snap up some phat pads Max...