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The first cut with a hand plane should remove a shaving, not an argument with the timber. Blade projection is the main control. Set it too deep and the plane becomes difficult to push, tears out grain, and may leave a hollow surface. Set it too shallow and the blade skates without producing a useful shaving. A controlled first cut starts with a small projection, a sharp edge, and a sole that is clean enough to register accurately.
What blade projection means
Blade projection is the amount of cutting edge extending below the plane sole. It is not normally measured from the top of the blade. You judge it at the mouth, where the edge emerges through the sole. A change of only a few hundredths of an inch can make a noticeable difference, especially with a finely set smoothing plane.
For a first cut, aim for a shaving around 0.001 to 0.003 inch thick (0.025 to 0.075 mm) on a smoothing plane. A jack or fore plane used for stock removal can start closer to 0.005 to 0.010 inch (0.125 to 0.25 mm), but that is too aggressive for delicate edges, reversing grain, or a board that is already close to size.
Projection is only one part of the setup. The blade must be sharp, seated firmly, and aligned parallel with the sole. A skewed edge leaves one side taking a heavy cut and the other side taking almost nothing.
Prepare the plane before setting the blade
Remove dust and resin from the sole and clean the blade bed. Check that the cap iron, lever cap, or wedge is holding the blade securely. If the blade moves when you press on its corners, no amount of careful projection setting will produce a consistent cut.
Inspect the cutting edge under a bright light. A shiny line at the edge usually indicates a blunt section. For general work, a bevel around 25 to 30 degrees with a small secondary bevel is common. If the edge is dull enough to need force, sharpen it before adjusting projection. A waterstone sharpening kit is inexpensive and adequate for most users, although diamond plates are faster and less fussy about flattening.
Check the mouth opening as well. A tight mouth supports the wood fibers immediately ahead of the cut and helps reduce tear-out. It does not make a dull blade work. A wide opening combined with a deep blade setting is particularly likely to lift chunks from figured or reversing grain.
Set the first projection
Retract the blade until it is clearly above the sole. Fit it into the plane and tighten the cap or wedge just enough that the blade will not fall out but can still be adjusted.
Hold the plane upside down at eye level and sight along the sole toward a bright background. Advance the blade gradually. With a metal plane, use the depth-adjuster in small clicks or partial turns. With a wooden plane, tap the blade gently with a plane-setting hammer or small mallet. Tap the body, not the cutting edge, when you need to retract it.
Stop when you can just see a continuous, fine line of edge across the mouth. The first visible line is often enough for a smoothing plane. If the edge appears more strongly on one side, correct the lateral adjustment or tap one blade corner lightly. Tighten the retaining hardware fully, then sight again. Tightening can shift the blade.
| Job | Starting projection | What the shaving should look like | Main risk |
|---|---|---|---|
| Removing high spots with a jack plane | 0.005–0.010 in (0.125–0.25 mm) | Visible shaving, possibly full width | Heavy push effort and tear-out |
| General edge and face work | 0.003–0.005 in (0.075–0.125 mm) | Light, continuous shaving | Uneven cut if the blade is skewed |
| Final smoothing | 0.001–0.003 in (0.025–0.075 mm) | Very thin, nearly transparent shaving | Skating or polishing instead of cutting |
Test the first stroke safely
Use a piece of scrap from the same board if possible. Secure the work so it cannot move, and begin with the plane resting flat before the blade reaches the wood. Push with steady pressure over the front knob and rear tote. Do not press down hard on the front of the plane throughout the stroke; that can create a hollow at the start.
A good first shaving is continuous and reasonably even across the blade. If only one corner cuts, adjust the blade laterally. If the plane chatters, the blade may be loose, the projection too deep, or the work poorly supported. If the plane refuses to start cutting, advance the blade by a very small amount—about 1/8 turn on many metal-plane adjusters, or a light tap on a wooden plane.
For an even lighter adjustment, retract first and then advance again. Simply trying to push a blade back can leave it loose against the bed. On metal planes, the low-angle block plane is useful for end grain and small corrections, but it has less length to bridge hollows than a bench plane.
Read the failure modes
Plane stalls or feels unusually hard to push: retract the blade slightly. A deep cut is the common cause, but also check for a blunt edge, dirty sole, or a knot.
Shaving breaks into short pieces: the edge may be dull, the grain may be reversing, or the plane may be taking too deep a cut. Reduce projection and plane in the direction where the fibers lie down.
Tear-out appears behind the cut: reduce the cut, close the mouth if possible, and skew the plane slightly across the board. A higher cutting angle can help with difficult grain; a high-angle bench plane is useful for frequent figured-wood work but is not necessary for ordinary softwood and straight-grained hardwood.
The plane cuts at the beginning but not the end: maintain contact over the work and shift pressure from the front knob to the rear tote as the plane leaves the board. This is a technique problem, not a reason to deepen the blade.
When to change the setting
Make one adjustment at a time and test again. If the first controlled cut is clean, keep that projection and work in overlapping strokes. Increase depth only when the plane is taking too little material for the job. For final fitting, retract the blade until the shaving is barely visible, then check the work with a straightedge and your fingertips.
A cheap plane can be perfectly adequate for learning this process if its blade is sharp, the sole is reasonably flat, and the cap or wedge holds securely. Spend more on a better plane only when adjustment backlash, poor blade steel, or a distorted sole repeatedly prevents a consistent setting. The skill is in making small, repeatable changes—not in forcing a heavy shaving from the first stroke.