My hedger is dull and just shreds when I cut shrubs with it. I've seen some guys on here use a dremel tool, grinder, etc to sharpen them with. I don't really want to go that route if I don't have to because I just dont think I could get the correct angle. The dealer here wont sharpen them, said its not cost effective to do so. New blades are hella expensive for it. Has anyone tried the lapping compound (same substance used to sharpen reel mowers) to sharpen hedge trimmers with? Would this work or is it too harsh and abrasive? Idea was to coat hedger blade in lapping compound and run the machine for a short period of time. Thanks.