Bandsaw Tooth Pitch (TPI) & Resaw Sizer
Select optimal bandsaw tooth pitch (TPI), blade width, and gullet depth for thick hardwood resawing and fine curve work. This calculation engine matches your board thickness, wood density, and bandsaw motor horsepower to maintain clean chip clearance and eliminate blade drift.
How Many Teeth Per Inch (TPI) Should You Use for Resawing?
For resawing lumber over 4 inches thick, use a coarse 2 to 3 TPI blade with a deep hook tooth profile. Deep resawing requires massive gullet volume to carry packed sawdust through the full height of the cut without overflowing. A blade with too many teeth (such as 6 or 8 TPI) fills its small gullets within the first two inches of travel, causing sawdust to spill out into the kerf, generate friction heat, and force the blade to bow and wander off line.
Bandsaw Resaw Feed & Tooth Pitch (TPI) Sizer
Select optimal blade tooth pitch, gullet capacity, and blade width to prevent blade drift, burning, and wandering.
How to Set Up Your Bandsaw for Drift-Free Resawing
Follow these four tuning steps to eliminate blade barrel bowing and cut bookmatched veneers with uniform thickness:
Install the Widest Blade Your Machine Can Tension
Beam strength is governed by blade width. A 3/4″ or 1″ wide blade resists twisting under feed pressure far better than a 1/2″ blade. On standard 14″ cast-iron saws, a 1/2″ or 5/8″ blade represents the maximum practical width the tension spring can pull flat.
Select a 2 or 3 TPI Hook Tooth Blade
When slicing through 6″ to 10″ tall boards, a 2 or 3 TPI blade provides cavernous gullet pockets that hold sawdust until each tooth exits the bottom of the plank. Hook teeth feature a 10° positive rake angle that aggressively shears wood fibers with minimal feed pressure.
Align the Rip Fence to the Natural Blade Drift Angle
Every bandsaw blade tracks with a slight angular bias called drift due to uneven tooth set. Take a scrap board with a straight line drawn down the center, freehand cut along the line, stop halfway, shut off the saw, and align your fence to match the angle of the wood on the table.
Adjust Thrust Bearings and Side Guides Just Behind Gullets
Position your upper and lower guide blocks or ceramic pads approximately 0.003″ behind the blade gullets (using a dollar bill as a feeler gauge). The guide blocks must never pinch the teeth or contact the tooth set, or the blade will track erratically.
Why Sawdust Packing Causes Blade Drift and Barrel Cuts
Most woodworkers blame blade drift on poor fence alignment, but the real culprit is almost always gullet overloading. As a bandsaw tooth shears wood fibers, the resulting sawdust curls into the curved hollow space ahead of the tooth called the gullet.
Sawdust Volume Expansion
Wood sawdust occupies up to seven times the physical volume of solid wood. In an 8-inch tall resaw cut, small gullets completely choke with packed dust, spilling abrasive particles along the sides of the blade.
Lateral Blade Wandering
When sawdust spills out of packed gullets, it forces itself between the blade body and the cut walls. The unequal lateral friction pushes the flexible blade sideways, causing uneven “barrel” or hourglass-shaped cuts.
Carbide Resaw Blades
Premium resaw blades (such as the Laguna Resaw King) use individual ground carbide teeth spaced at 1.25 to 2 TPI on a variable pitch pattern. The massive open gullets keep friction low and deliver near-planed veneer surfaces.