When "the bigger hammer" doesn't work, here is what I did on a 10 year old Escort.
Drilled lots of 1/4" holes all the way around near the "step" in the rotor. Using biggest hammer available, break off outer ring of router. Now you can fit a gear puller on what is left of the rotor. Add Liquid Wrench and crank ! Scary when that thing pops !!
A Tip for all of you "do it yourself" guys. When doing brakes, place a garbage can lid under the rotor/drum before you start pounding and squirting oil. Makes clean up a breeze !!
