I have some toenail clippers that are square across the cutting edge and flat when closed . the bevel is on the inside. I have used them for fly tying&nbsp; &nbsp;when I need to trim errant fibers. they trim much closer than scissors.&nbsp; they are easy to sharpen due to the square and flat outside edge. Just hold them closed and rub them across a fine flat stone. Most of the mono nippers are made the same way and can be used for trimming errant fibers and also sharpened the same way.<br>