How to Choose Band Saw Blade Tooth Set for Resawing
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Resawing is the most demanding job you will ask a band saw to do. You are cutting long, tall boards down their thickness, often 6 to 12 inches high, and you need that cut to be straight, clean, and consistent from top to bottom. Tooth set — how the teeth are bent left and right of the blade body — determines how wide the kerf is, how well the blade clears sawdust, and how much the blade wants to wander. Get the set wrong and you will get washboarding, burning, or a cut that drifts no matter how you adjust the fence.
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What Tooth Set Actually Does in a Resaw Cut
Every band saw blade cuts a kerf wider than the steel body behind the teeth. That extra width is the set. Without it, the blade body would rub the sidewalls of the cut, generate heat, and bind. With too much set, the blade removes more wood than necessary, needs more power, leaves a rougher surface, and is harder to drive straight.
For resawing, the challenge is sawdust volume. A 10-inch tall cut that is 4 feet long produces a massive amount of dust that must travel up and out of the cut through the gullets. Set helps here by opening the kerf so dust is not packed between blade and wood. But gullet size and tooth pitch matter just as much. You cannot fix a clogged 6 TPI blade by adding more set — you will just make a wider, rougher cut that still clogs.
The Three Set Patterns You Will See
Most woodworking resaw blades use one of three set patterns. Manufacturers rarely explain this well on the packaging, so you need to know what you are looking at.
Raker set is the standard for resawing. The pattern repeats as left, right, straight (unset). The straight raker tooth cleans up the center of the kerf while the set teeth define the walls. This gives a relatively flat-bottomed kerf, good beam strength, and the best tracking for tall cuts. If you buy a dedicated 1/2 inch resaw band saw blade 3 TPI with a hook or skip tooth, it is almost always raker set. This is what you want for hardwoods and veneer work.
Alternate set is left, right, left, right with no raker. Every tooth is bent. This is common on general-purpose blades and finer-tooth blades (6-10 TPI). It cuts aggressively and leaves a slightly rougher finish, but the bigger issue for resawing is that the blade has less stability. With no straight tooth to guide it, alternate-set blades tend to be noisier and wander more in cuts over 6 inches high. Fine for breaking down stock, not ideal for book-matching.
Wavy or wave set groups teeth in waves ��� several teeth bent left, several bent right. You see this on metal-cutting blades and very fine wood blades (10-14 TPI). The kerf is narrow and the cut is smooth, but gullets are tiny and dust clearance is poor. Never use a wavy-set blade for resawing wood thicker than 2 inches. It will clog, overheat, and drift within seconds.
There is also variable pitch / variable set, often written as 2-3 TPI or 3-4 TPI. The tooth spacing and sometimes the set amount changes along the length of the blade. This breaks up harmonic vibration that causes washboarding — those evenly spaced ripples you see on resawn faces. A variable-pitch raker blade is worth the small premium if your saw leaves a washboard pattern even when feed rate is steady.
TPI and Set Work Together, Not Alone
For resawing wood on a 14-inch or larger stationary band saw, the sweet spot is 2 to 4 TPI with a hook tooth and raker set. Hook teeth have a 8 to 10-degree positive rake angle that pulls fiber aggressively and clears dust. Skip teeth have a similar TPI but with a 0-degree rake and a big flat gullet; they cut slower and smoother, which helps on very hard or figured wood.
Rule of thumb: you want 3 to 6 teeth in the cut at any time. For a 6-inch resaw, a 3 TPI blade has about 18 teeth engaged. For a 10-inch resaw, a 2 TPI blade has about 20 teeth engaged. Drop below 2 TPI and the tooth bites too hard and leaves deep scratches. Go above 4 TPI for a tall cut and gullets pack solid, the blade heats up, and you start pushing harder, which is exactly how you bow a cut.
Set width for most quality resaw blades is 0.022 to 0.032 inch wider than the blade body on a 1/2-inch blade (kerf roughly 0.025 to 0.035 inch total). Carbide-tipped resaw blades have much less set because their teeth are ground wider than the body instead of bent — kerf is precise but the blade needs more tension and a saw that can tension it properly, typically 15,000 PSI or more.
Blade Width Matters More Than Tooth Set for Straightness
Even the perfect tooth set will not make a narrow blade cut straight in a tall resaw. Width is beam strength. On a typical 14-inch cast-iron band saw with a stock spring, the practical maximum is a 1/2-inch wide blade. On a 17 to 19-inch steel-frame saw with a stronger tension spring, you can properly tension a 3/4-inch blade. Do not put a 3/4-inch blade on a saw that cannot tension it — an under-tensioned wide blade wanders worse than a properly tensioned 1/2-inch blade.
If your saw is a 14-inch model and you only resaw occasionally up to 6 inches, a quality 1/2-inch, 3 TPI hook, raker-set carbon steel blade is the honest best buy. You do not need carbide to get good results at this height, and you will replace the blade more often from hitting grit than from dulling anyway. If you routinely resaw 8 inches and taller or you cut veneers where every thou matters, a carbide tipped resaw band saw blade with its ground teeth and minimal, precise set will stay sharp 10 to 20 times longer and leave a surface that needs less sanding. The trade-off is cost and brittleness — carbide does not like being twisted or stored coiled tightly.
Choosing by Stock and Saw
| Resaw Height & Wood | Recommended Set & Tooth | Kerf & Finish | When It Fails |
|---|---|---|---|
| 4-6 in, softwoods and soft hardwoods (pine, poplar, cherry) | Raker set, 3 TPI hook, 1/2 in wide | Medium kerf 0.028-0.032 in, light sanding needed | Push feed too fast and 3 TPI will leave washboarding; slow down instead of changing blade |
| 6-10 in, hardwoods (oak, maple, walnut) | Raker set, 2-3 TPI variable-pitch hook, 1/2 – 3/4 in wide | Slightly wider kerf, reduced vibration, cleaner face | Alternate or wavy set here packs dust and drifts; variable pitch helps most on taller cuts |
| 10-12 in, dense or figured wood, veneer | Ground carbide, 2-3 TPI, minimal set, 3/4 in+ wide | Narrowest kerf, flattest finish, least sanding | Needs high tension; cheap carbon blade will dull halfway through and start to bow |
| Under 4 in or curves, general use | Alternate set, 6 TPI skip | Narrow kerf, smoother edges | Not a resaw setup; gullets too small for tall cuts, will burn and bind |
Failure Modes to Watch For
A cut that is convex — wider in the middle than at the top and bottom — means you are feeding too fast or the blade is dull. The center of the board has more friction and the blade bows backward. A fresh raker-set 3 TPI blade should feed with light, steady pressure. If you have to force it, stop and check tension and sharpness.
Washboarding or chatter marks are harmonic vibration. Try a variable-pitch blade, reduce feed speed slightly, and check that your guide bearings are set just behind the gullets, not riding on the set itself. Guides that touch the set will knock the set out of true and the blade will never track again.
Burning on one side and a gap on the other is a drift or fence alignment issue, not a set issue, but excessive set amplifies it. Tune drift first with a single straight line test cut, then lock the fence to that angle. Adding more set to compensate for drift just wastes wood.
Premature dulling in one spot often means the blade is contacting the thrust bearing too hard or the weld is hitting. A blunted raker tooth will not clear the kerf center, so the blade rubs. You will feel heat and see fine dust instead of curls.
Practical Buying Advice
You do not need a huge inventory. For most stationary shop saws, two blades cover 90 percent of resawing: a 1/2-inch 3 TPI hook raker-set carbon blade for everyday work, and if you do tall or abrasive wood, a carbide resaw blade in the same width your saw can actually tension. Buy carbon blades in multiples — they are consumables. Clean pitch buildup with a resin cleaner, release tension when the saw sits overnight, and store blades hung, not tightly coiled on a nail where the set gets flattened.
If you are unsure what your saw can tension, check the tension scale with the blade at proper tension and look for beam deflection. A correctly tensioned 1/2-inch blade should ring clearly when plucked and deflect about 1/4 inch sideways with moderate thumb pressure. If you cannot reach that without maxing out the spring, do not go wider.
For a first upgrade from the generic blade that shipped with the saw, a dedicated band saw blade 1/2 inch 2-3 TPI hook raker set will make a bigger difference than any fence or guide upgrade. It is the cheapest way to turn a frustrating resaw into a predictable glue-ready cut.
