Scrub PlaneThe Lie-Nielsen Scrub Plane is based on the Stanley 40½. With its large-radius blade and open mouth, this plane removes large quantities of wood in a hurry. In the past, Scrub Planes were used like a Thickness Planer to take rough-sawn boards down to size. Then the woodworker would progress to a Jack Plane, and finally to a Smoothing Plane.
Today’s woodworker will still find pleasure in using a Scrub Plane for that purpose, and will also find it practical for shaping irregular objects, for producing an interesting finished surface, and for trickier jobs like backing out a length of molding to fit an irregular wall.
Blade Sharpening: The Scrub Plane blade comes with a 3" radius. The exact radius is not important, and the curve of the blade does not have to be perfectly symmetrical to do a good job. It just has to be sharp.
After preparing the back of a new blade like any other plane blade, you are ready to tackle the bevel. One easy way is to hold the blade vertically in a vise and start with the coarsest stone necessary. Hold the stone flat against the bevel, and stroke the stone upward as you move it across the bevel. To hone with finer grits, you may find it easier to work at the bench. Register the bevel firmly on the stone, and roll the blade from one side to the other as you move down the length of the stone. Go all the way up through the grits as you would on any stone, and roll the blade from one side to the other as you move down the length of the stone. Go all the way up through the grits as you would on any plane blade: 220, 1000, 4000, and finally 8000. When the edge is sharp, stone the back of the blade to remove the wire edge. The finished edge should be consistently sharp from one side of the blade to the other.
Setting the Blade: The blade is inserted with the bevel facing down. Sight down the sole to set the depth of cut — practice will tell you the amount of exposure needed for the job.