Originally Posted by maddog34

two methods can be used... sand paper laid on a very flat surface (i use the table of my drill press) then as you sand, rotate the pad 90* every ten circles of sanding... never back/forth, only in circles...

the second method involves my rather large bench grinder, and carefully pushing the pad against the flat side of the 10" stone, and also rotating 90* every two-three seconds... the Material comes off VERY fast, so re-measure every time between rotations..

.one tenth of a mm, per pad, should be enough thickness reduction to get your brakes working properly.
start by checking for excess epoxy on the backs of the pads.

the 90* rotations are to reduce the chance of sanding or grinding TOO Much from any one angle, since doing so will likely cause an un-even thickness, at an angle....