Recently I did a detail on a black Ford that was in bad condition. The paint was very rough and oxidized. I clayed the vehicle first. The next process was with Menzerna PG. I used the rotary to do the work. At the end of the detail the white pad from LC was torn. It showed the effects of the work that it had done. Admirably, I might add. I had used this same pad at least a dozen times with a PC 7424. The pads was in good condition prior to using it with the rotary.
Having read the comments of this thread, it answered some of my questions as to why the pad started coming apart. I am sure that the rotary had something to do with the pads demise. But, considering that I used the most abrasive compound in my detailing arsenal, it is no wonder that the pad is falling apart. It was old, used and with the rotary, abused.