Sharpening a Blade for a Scraper Plane

Scraper PlaneAs a part of rehabbing my newly-acquired but used Lie-Nielsen scraper plane, I needed to sharpen the blade. If you’re not familiar with how a scraper plane works, it’s quite a bit different than a standard bench plane like a smoothing plane. If you’ve ever used and sharpened a card scraper, you’re familiar with how they work. A slight burr is formed on the edge. It’s the burr that performs the cutting action.

The Lie-Nielsen scraper plane comes with a thick blade. And their web site has complete instructions on how to sharpen it for use. The first thing I did was flatten the back and remove the existing burr on a series of diamond stones. Then I proceed to hone the bevel. Finally, I clamped the blade upright in my face vice and started to form a burr with my Veritas burnisher. (I’ve also used the shank of an old screwdriver as a burnisher.) I used two hands to apply firm pressure making a few strokes starting at about 45° then working toward 90°. (Because I had the camera in one hand, you won’t see both of my hands on the burnisher.)

I installed the blade in the plane. I just let it drop to the surface of the workpiece the plane was sitting on. By adjusting the angle of the blade, the burr will eventually “bite” into the workpiece and form thin shavings.

This is a great tool to use for smoothing large worksurfaces that might have unpredictable grain prone to tearout with a standard smoothing plane. The scraper plane doesn’t care about the direction of the grain. It will create a glass-smooth surface.