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Choosing between a toothing plane and a scrub plane depends on what “preparing” means in your job. If the timber is bowed, twisted, or several millimetres too thick, a scrub plane removes waste quickly. If the board is already close to flat but has wild grain that keeps tearing out, a toothing plane gives you a controlled surface that is easier to finish.
What Each Plane Is For
A scrub plane is a roughing tool. It normally has a narrow iron, often about 35–45mm wide, with a pronounced camber. The curved edge takes a thick shaving in the middle of the cut and leaves hollows or scallops across the board. This is intentional: the plane is designed to remove material rather than produce a finished surface.
A toothing plane has a serrated iron. Instead of one continuous edge, the blade makes a series of fine cuts. It removes relatively thin shavings, often around 0.2–0.5mm, and breaks up difficult grain. The resulting surface feels rough and may show fine ridges, but it is usually more predictable than a standard plane on reversing or interlocked grain.
For genuinely rough, oversized timber, the scrub plane is usually the first tool. A toothing plane is better considered a specialist follow-up tool, or an alternative when grain direction makes ordinary planing unreliable.
Scrub Plane vs Toothing Plane
| Feature | Scrub plane | Toothing plane |
|---|---|---|
| Main job | Remove large amounts of waste quickly | Control tear-out and prepare difficult grain |
| Typical cut | About 1–3mm, depending on setup and timber | Usually light, fine cuts around 0.2–0.5mm |
| Iron shape | Strongly cambered edge | Serrated edge, often with little or moderate camber |
| Surface left behind | Deep tracks and hollows | Fine ridges and a textured surface |
| Best use | Reducing thickness, flattening high spots, removing cupping | Wild grain, figured wood, veneer or difficult boards before final smoothing |
| What follows | Jack or fore plane, then try plane or smoother | Often a closely set smoothing plane, scraper, or abrasive |
When a Scrub Plane Is the Better Buy
Choose a scrub plane when the board needs substantial correction. It is useful for taking a 50mm rough-sawn board down toward 45mm, removing the crown from a joist, or flattening a cupped face before jointing an edge. A few diagonal passes can remove waste far faster than trying to start with a finely set bench plane.
The important limitation is accuracy. A scrub plane does not naturally create a flat finished face. Its cambered blade cuts narrow grooves, so you must work across the high areas and regularly check with a straightedge. If you keep following the same track, you can create a washboard surface or hollow the board.
Set the blade to take a substantial shaving, but do not force the tool beyond its capacity. On softwood, a 1–2mm cut may be practical. On hard, knotty timber, start closer to 0.5–1mm. Work diagonally across the grain for fast stock removal, then reduce the projection and plane along the grain. A long jointer or try plane is still needed if the face must be genuinely flat.
A dedicated scrub plane hand plane is convenient, but you can also convert a suitable bench plane with a cambered iron. That is often the cheaper option for occasional work, provided the plane body and mouth can tolerate the heavier cut.
When a Toothing Plane Earns Its Place
A toothing plane makes sense when the timber is not dramatically oversized but the grain is causing repeated tear-out. This happens with figured maple, ribbon-grained mahogany, some boards cut near the pith, and timber with grain that changes direction every few centimetres.
Instead of lifting a broad shaving that can tear below the surface, the serrated iron makes many narrow cuts. The plane still needs to be used with the grain where possible, but it is less likely to produce a large splintered crater. After toothing, a sharp smoothing plane with a tight mouth can remove the ridges.
Do not buy one expecting it to be a faster scrub plane. The narrow teeth limit how much material each pass removes, and the rough surface requires another operation. On a board that is 3mm too thick, a toothing plane is generally slower and more tiring than a scrub plane followed by a fore plane.
Toothing planes are also useful beneath veneer because the textured surface gives glue more mechanical key. That is a specialist advantage, not a reason to use one for every rough board. For ordinary construction timber, a scrub or jack plane is normally more useful.
Setup and Working Method
Before planing, mark the intended finished face with a pencil grid. Use winding sticks or a straightedge to identify twist, and mark the high corners. Secure the timber firmly; movement wastes effort and can cause the plane to dive at the end of the cut.
Start with the tool held across the grain or at a diagonal, removing only the marked high areas. Check progress every few passes. Once the face is close to flat, switch to a jack or fore plane with a moderate camber. Finish with a try plane or smoother using a very light cut. A 0.1–0.2mm finishing shaving is more realistic than trying to correct a badly hollowed face with the smoother.
With a toothing plane, keep the cut shallow and overlap passes. The blade should be genuinely sharp: serrated does not mean blunt. A damaged or poorly honed toothing iron can crush fibres instead of cutting them. Follow with a sharp smoothing plane, cabinet scraper, or sanding block, depending on the required finish.
Common Failure Modes
Tear-out: Usually caused by planing against reversing grain, taking too heavy a cut, or using a dull iron. Change direction, reduce the cut, and use a toothing plane if the grain remains unpredictable.
Deep scrub tracks: The blade is too heavily cambered for the remaining work, or the plane is being used in one direction for too long. Reduce the projection and change to a jack or fore plane.
A hollow face: The operator is checking only the ends or pushing through the centre repeatedly. Use a straightedge in several positions and plane the high spots, not the whole board indiscriminately.
Splintered board ends: Support the exit end, plane from both ends toward the centre, or take a lighter cut near the edge. End grain and knots deserve slower passes.
Which One Should You Buy?
For a first roughing plane, buy or make a scrub-plane setup. It covers thickness reduction and initial flattening, and the cheaper converted bench-plane route is fine for occasional furniture or repair work. Pair it with a reliable jack plane for the transition to a flatter surface.
Choose a toothing plane when you regularly work difficult hardwoods, figured boards, or veneering projects. If most of your timber is straight-grained softwood or ordinary construction lumber, the money is better spent on a sharp replacement iron, a straightedge, and a dependable bench plane. A toothing plane solves a real problem, but it is not a general-purpose substitute for a scrub plane.