hmmm that is interesting. wonder how they surface them. cause you cant just put sand castings on a car

. i bet the dideshiems(machine that we use to make rotors) and the microfinishers dont like them castings

. damn germans. lol yesterday one of the dideshiems unchucked a rotor in midcycle, and threw a 20lb rotor though 2 4 inch bullet proof and reinforced doors. scared the sh*t out of the operater dad said, i know i would have to clean my pants out.
but they still have to finish them, but i bet the insides arent as prone to cracking since they should be champhered in the casting. again, damn germans, and i learn something everday
