I'd like to keep my mulching mower blade sharp over the mowing season,
though as I understand it, the extra ridges make it more difficult to
sharpen. (Last season I took one to a mower shop and it came back
duller than it went in.) Would one of those hand-held sharpeners like
the one pictured at the link below be effective on a mulching blade?
http://tinyurl.com/aku75q