Sorry if this is
.
I came across this thread whilst searching the archives on another matter.

We've been using one of these pedipaws things for a couple of years. IMO, they are not a replacement for a clipper (unless you're willing to use it a couple times a week at least), but a very useful adjunct for rounding and smoothing following clipping - or in-between clippings.

Replacement wheels are no problem; these things are carried in the big-box pet supply stores now, and they have replacements aplenty.

Starting out the right way is important. We turned it on and played with it with the dog several times before ever coming near his nails. First we got him used to the noise, and then the vibration, touching his body, legs, face.... and eventually paws - until he had no fear/concern at all. It was just another fun thing to do with people. We eventually had him fetching it on command. By the time we tried it on his nails, there were no problems, and never have been any.

Using it, it's important to brace the nail against the edge of the hole it goes through so the spinning sanding wheel doesn't "catch", jump, or vibrate uncomfortably.

Nail Clipping Tip: We clip & sand the dogs nails after his bath, when they're soft from being in the bath water - much easier to clip and easier on the dog. We once had one dog who fought like the dickens during clipping, but after doing it on soft wet nails a couple of times, he calmed right down and no longer resisted. The pedipaws works better on soft nails too, but sometimes it just has to be done between baths, depending on breed, preferences, etc.

Doc