More questions for Odie Are you saying the Velcro on the back of the disc wears out before the abrasive does? or is more the hook part that's on the backer? I'm pretty good about tossing an abrasive when the actual grit wears out, didn't realize the Velcro would give up first. If you have time some day, could you post a picture of this set-up. Not sure I'm following, but like the idea of being able to customize when need be. I'm not seeing flex-edge discs on the Packard page for Power Lock. What kind do you use? Seems to be the general consensus, I figured just the lower grits for power sanding.