there was a discussion about this sometime ago. I posted that I had purchased one and would give a report
I have so far used it a few times and find it works good. It has shapening stones to sharpen the blade rather than the "sandpaper" type in others. The only thing it won't do is take a nick out of the blade. I touch up the edge ab it when I find the blade begins to drag. It might be worth the $ if one uses the higher priced blade but with the low cost of the Harbor Freight blades...it might not be worth the $42.00. Overall I'm pleased with it.