This my dear blog-reading, dog-owning friends is an absolutely wonderful invention. Disclaimer: if you've clicked on the link, please disregard the corny video.
Forget paying the vet to trim their nails (which usually involves something along the lines of knocking Pellet out). Not to brag, but Norm and I do have this nail trimming down to a science.
Get a raw hide
Go in the den (or a confined space) with one dog at a time
Norm tackles dog that's pre-occupied with raw hide
Fern quickly trims all accessible nails with real clippers and follows with the PediPaws file until job is complete and nails are at desired length.
It's almost magical.