Trukernix
I agree with Brian, those grinding discs are the best thinkg after sliced chees. I have used them for 2 years and with my welding skills I need them. The change of angle of attack will change the relult and how much you take off. A older worn off disc will actually start polishing the metal with out scratches. "Walters" makes a good product and I find there discs last longer than some of those from Princess Auto or Ukrainian Tire.