So is there a way to sharpen 'em? Or, once they're dull, toss and replace?
I shave me head 'bount once a week with 'em. I've noticed that they're not gettin' all the hairs. Keep havin' to go over the same spot like 4-5 times to get uniform clippage. And since I sport the "chin strap" look, I use 'em on the face too. Its really irritating to get all don'ded up an have a few stray hairs that didn't get clipped.