Table saw blade selection: rip, crosscut, combination, and dado compared

A $300 contractor saw with the right blade will produce cleaner cuts in hardwood than a $3,000 cabinet saw with a worn combination blade. The blade is the cutting instrument; the saw is just the delivery mechanism. Matching blade geometry to the cut you are making is one of the highest-leverage adjustments in any woodworking shop.

Tooth geometry basics

Every circular saw blade is defined by four variables: tooth count, tooth geometry (the grind angle), hook angle, and kerf width.

Tooth count sets the trade-off between speed and finish quality. Fewer teeth (24–40) remove more material per rotation — faster ripping, rougher finish. More teeth (60–80) remove less material per pass — slower cuts, smoother finish. This is not preference; it is physics.

Tooth geometry determines what each tooth does to the wood fiber. Alternate top bevel (ATB) grinds alternate teeth on opposite side bevels, creating a slicing action that cuts cleanly across wood fibers — ideal for crosscutting. Flat top grind (FTG) cuts with a chisel-like action straight down into the fiber — ideal for ripping with the grain. Triple-chip grind (TCG) alternates a raker tooth (FTG) with a higher trapezoid tooth; this is used for hard materials, plastics, and composites.

Hook angle is the angle of the tooth face relative to the blade center. A high hook angle (20–25 degrees) is aggressive — the tooth grabs the material and pulls it through. A low or negative hook angle (-5 to 5 degrees) is controlled — less feed force required, smoother entry, appropriate for aluminum, plastics, and crosscutting on sliding miter saws where material can be lifted.

Kerf width is the width of the cut. Full-kerf blades (0.125 inch) require a saw with at least 3 horsepower to run through hardwood without bogging. Thin-kerf blades (0.094 inch) remove less material per cut — 25% less energy required — which allows contractor saws and benchtop saws with limited horsepower to rip hardwoods cleanly.

Rip blades

A rip blade is optimized for cutting parallel to the grain — ripping a board to width. The geometry: 24–30 teeth, flat top grind, high hook angle (18–22 degrees). The flat-top teeth cut cleanly with the grain fiber without tearing; the high hook angle allows fast, aggressive feed rates.

The finish from a good rip blade (Freud LM72M, Forrest WW10407, Infinity 010-030) on hardwood is smooth enough to glue without further preparation — this is the "glue line rip" standard that premium rip blades are marketed against. A truly glue-ready surface from a rip blade requires: sharp blade, correct feed rate (not too fast, not too slow), and a properly aligned fence with no drift.

Rip blades perform poorly on crosscuts — the FTG geometry tears across the grain fiber instead of slicing it, producing a rough, fibrous exit face that needs significant cleanup.

Crosscut blades

A crosscut blade cuts perpendicular to the grain. The geometry: 60–80 teeth, alternate top bevel (ATB) or high alternate top bevel (Hi-ATB), low hook angle (5–15 degrees). The high tooth count and bevel geometry shear the wood fibers cleanly at each tooth, producing a surface that is nearly sanding-ready on most species.

A quality crosscut blade (Freud LU83M010, Infinity 010-064, Forrest WWII) on hardwood leaves a surface clean enough that it can go directly to final assembly in many furniture applications. This matters for cutting parts to finished length — a clean cross cut at the end of a tabletop or drawer side eliminates a sanding step.

Crosscut blades perform poorly on rips — the high tooth count and low hook angle create friction and burning in long rip cuts, especially in dense hardwoods. Never rip a 8-foot board with a 80-tooth crosscut blade if you value either the board or your patience.

Combination blades

A combination blade (typically 40–50 teeth) attempts to split the difference — adequate for ripping, adequate for crosscutting, ideal for neither. The geometry groups teeth in clusters: typically four ATB teeth followed by a raker (FTG) tooth, then a gullet, then repeated. The ATB teeth handle crosscutting; the raker clears the kerf.

The combination blade is the correct choice when you are changing cuts frequently and blade changes are impractical. In a small shop with one table saw and mixed-use production, a premium combination blade (Freud LU84M010, Forrest Woodworker II) is the right daily driver.

The combination blade is not the correct choice when cut quality is the priority. For final-dimension ripping or for cutting tabletop boards to final length, a dedicated blade produces measurably better results.

Dado stacks

A dado stack is two outer blades (chippers) flanking adjustable chipper blades to cut a wide flat-bottomed groove in a single pass. This is the tool for cutting dado joints, rabbet joints, and the channels for drawer bottoms and cabinet backs.

A dado stack is not legal in some table saw configurations — European sliding-table saws often have blade guards that are incompatible with dado stacks, and blade guard removal is required — and it is not compatible with saws without sufficient arbor length (you need at least 5/8 inch of exposed arbor past the dado stack at full width).

The Freud SD508 and Forrest Dado King are the standard references for quality dado stacks. A cheap dado stack (the $40 sets sold at big-box stores) can work but often produces an irregular bottom in the dado groove and a rough wall — acceptable for shop-made jigs, not acceptable for visible joinery.

Dado width is adjusted by the combination of chipper blades and thin shims (included with premium sets). Setting up a dado stack for a precise width takes 5–10 minutes of test cuts; once set, it is a precise and fast joinery tool.

Blade maintenance and replacement

A dull blade is more dangerous than a sharp one — it requires more feed force, binds more easily, and produces more heat, which can cause kickback. The signs of a dull blade: burning on the cut surface (friction heat), the saw bog under load before it should, and the exit face is rougher than it should be for the blade's tooth count.

Carbide blades can be resharpened by a professional sharpening service — typically 3–5 times before the carbide tabs are too small to regrind. The cost of sharpening (typically $15–$25 for a 10-inch blade) versus the cost of a new blade depends on the blade's original quality. A $40 combination blade is often cheaper to replace than sharpen; a $150 Forrest blade is worth sharpening twice.

Keep blades clean. Pitch and resin from certain woods (pine, cedar, some exotics) build up on the carbide tips and on the blade body, increasing friction and degrading cut quality. CMT Formula 2050 and Freud Blade and Bit Cleaner both dissolve pitch deposits; a 5-minute soak and a brass brush restore most pitch-coated blades to cutting condition.

What JB Woodworks runs

Daily driver: Freud LU84M010 40-tooth combination for mixed production work. Dedicated rip blade: Forrest WW10407 30-tooth for hardwood ripping when a glue-line surface is required. Crosscut blade: Infinity 010-064 80-tooth for final-length cuts on furniture parts. Dado stack: Freud SD508 8-inch set for all dado and rabbet joinery.

We change blades more often than most shops because the combination blade genuinely improves quality on both rip and crosscut when paired with dedicated blades for the cuts where it would compromise quality. The 90-second blade change is worth it on furniture-grade work.