What Direction Do Bandsaw Teeth Face and What Is Tooth Pitch?

Which way the teeth should point

A bandsaw blade is a continuous loop that travels downward through the table at the front of the saw. The teeth must point in that direction of travel, so they bite into the wood as the blade moves down and pull the work against the table.

A simple way to picture it: at the cut, the tooth tips lean downward, like a row of small hooks pointing at the table. If the tips lean up toward the upper wheel instead, the blade is installed backward, and it will rub and burn rather than cut.

The blade runs on both sides of the loop, but only the front section between the guides does the cutting. The back section travels upward behind the saw, so its teeth appear to point the opposite way. That is normal and is not a sign of a problem.

How to check the direction on your saw

Unplug the saw before you open any covers or reach near the blade. Even a stopped blade has sharp teeth, so wear cut-resistant gloves when handling a loose blade and keep your fingers off the tooth edges.

With the saw unplugged and the blade tension released if you are changing it, look at the teeth in the section just above the table.

• Stand at the front of the saw, facing the blade.
• Find the section of blade between the upper and lower guides.
• Check that the tooth tips slant downward toward the table.
• Run a gloved fingertip lightly along the flat of the blade, never across the teeth, if you need to feel the slant.

Fixing a blade that is inside out

Sometimes a new blade is coiled so that the teeth point the wrong way once it is on the saw. The blade has not been made wrong. It simply needs to be turned inside out, which reverses the direction of the teeth.

Many woodworkers do this by holding the loop in front of them and rotating their hands inward or outward in a twisting motion. The loop folds over on itself and flips, and the teeth now face the other way. Take it slowly and keep the loop away from your face and body, because a springy blade can snap open without warning.

Wear safety glasses for this step. Once the blade is flipped and mounted, spin the wheels by hand, check the tracking, and confirm the teeth point down at the table before you close the covers and plug the saw back in.

What tooth pitch and TPI mean

Pitch is the distance from one tooth to the next. In practice, most blades are described by TPI, the number of teeth in one inch of blade. A blade with 3 TPI has teeth roughly a third of an inch apart. A blade with 12 TPI has teeth much closer together.

Between each pair of teeth is a gullet, the curved space that carries sawdust out of the cut. Coarse blades have deep, wide gullets. Fine blades have shallow ones, so they remove less sawdust per tooth and cut more slowly in thick wood.

Some blades use a variable pitch, where the spacing changes along the blade. A listing of 3/4 TPI, for example, means the pitch varies between those two values. Variable spacing helps reduce vibration and noise. It does not change which way the teeth face.

Choosing a pitch for the job

A common rule of thumb is to keep at least a few teeth in the wood at all times. Thin stock calls for a finer blade, and thick stock calls for a coarser one. A blade that is too fine clogs with sawdust and heats up. A blade that is too coarse can leave a rough surface.

The table below shows how pitch varies across the blades on our comparison page, using their published specifications.

Pitch is only one part of the choice. Width, length, and tooth style matter too, and the blade must match your saw's length exactly.

Pitch and direction on resaw blades

Resawing slices a thick board into thinner ones, and it shows why pitch matters. Tall cuts make a lot of sawdust, so coarse blades with deep gullets clear it faster and run cooler. That is why the blades on our best band saw blade for resawing page sit at 2 to 4 TPI, while the 6 and 12 TPI blades suit thinner stock and curves.

The Timber Wolf VPC blades list a tooth hook angle of 6.5 degrees. Hook angle describes how far each tooth leans forward, and it only works as designed when the teeth point down at the table. A backward blade cannot use that angle and will cut poorly. If you are comparing options, our resawing blade comparison lists width, thickness, TPI and length side by side.

Safety reminders

Bandsaw blades are thin, sharp and under tension. A few habits reduce the risk of injury.

Always unplug the saw before changing a blade or adjusting guides. Wear eye protection whenever the saw is running, and use hearing protection during long cuts, especially in dense hardwood. Set the upper guide just above the wood, and keep your hands clear of the blade path, using a push stick near the end of a cut.

• Unplug before changing or flipping a blade.
• Wear safety glasses for blade changes and cutting.
• Use hearing protection for extended sessions.
• Lower the guide close to the work and use a push stick.

Frequently asked questions

Should the teeth point toward me or away from me?

At the cut, the teeth point down toward the table, and the tooth tips slant toward you when you stand at the front of the saw.

Do all bandsaw blades have teeth in the same direction?

Yes, all standard blades are made so the teeth point down at the cut once installed correctly. Only an inside-out blade needs to be flipped.

Is a higher TPI always better?

No. Higher TPI gives a smoother cut in thin material, but it clears sawdust poorly in thick wood. Match the pitch to the thickness you are cutting.

How do I measure pitch on an unmarked blade?

Lay a ruler along the blade and count the tooth tips across one inch. Count from a gullet or tip and include the starting tooth consistently.

Does blade width change tooth direction or pitch?

No. Width affects stiffness and how tight a curve the blade can cut. Direction and pitch are separate features.