Originally Posted by
Dan Burkhart
Disc rotors are only 2 mm thick, so no matter what they are made of, warpage can happen. Your friendly neighborhood LBS will likely have a set of Morningstar drumsticks hanging on the wall to deal with this.
And yes, it is a common thing.
morningstar drumsticks, what are those? and what do they ? or are they seriously drum sticks, for playing drums?