My hubby got one to work. Not sure of the brand but it is blue. You have to be sure to turn it only in one direction. When I had tried it, I turned it back and forth. This meant I sharpened it in one direction and dulled it when I turned it back. DUH!!!!!!!!!!
It also only works if the blade is not damaged - no knicks out of it. Good Luck.
Our Harbor Freight is 3 1/2 hours away, so if we get down that way, I'll pick up some blades and be sure to let me Guild members know I'm going.