I bought this for light touch-up on planer blades between sharpening; It didn't do much. I think for this to be effective, it needs to include some sort of attatchment for maintaining an angle against the cutting blade. It is supposed to work by just putting the edge of the plastic against the cutter knife, and sliding back and forth a few times at the appropriate angle. Well, unless you've got robotically perfect arms, you're not going to be able to keep the angle correct. If you could maintain that angle, you might be able to touch up a micro bevel, but nothing substantial at all. They were relatively effective when removing the burr created though. That aspect was pretty foolproof. They cost me less than a professional sharpening, so I figure I'm not out too much, but I certainly wouldn't recommend them to anyone. Steelex D1123 Jointer and Planer Sharpener
The Jointer Blade Hone has it's place in the shop if used in a timely manner, however honing the beveled side of the blade I find that the plastic honing stone holder offers resistance to the movement of the tool across the blade. When enough force is applied to overcome the resistance it is done so in the blink of the eye and the tool slips off the blade thus putting your hand in danger of coming in contact with the blade.
The key here is to not try and sharpen your planer blades while they are on your machine. You simply cannot achieve the correct angle with the blades moving and they will. What I did what remove the blades and secured them to my vice. That way you can get a remarkably sharp edge without spending a lot of money. Well worth it's inexpensive price. - Woodworking - Chisels - Sharpening Tools - Sharpening'
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