What is Saw Blade?
A saw blade is the circular cutting disc used in table saws, miter saws, and circular saws, available in different tooth counts, grind patterns, and kerf widths to match specific cutting tasks.
The saw blade is the single component that determines cut quality more than any other factor. The same table saw produces a clean, glassy edge or a splintered mess depending entirely on which blade is installed.
Four main types of saw blades cover most woodworking needs.
Rip blades have 24 to 30 teeth with a flat-top grind (FTG) and an aggressive +20-degree hook angle. The large gullets clear sawdust quickly because rip cuts produce more waste per tooth. Use them for cutting solid wood along the grain.
Crosscut blades have 60 to 80 teeth with an alternate top bevel (ATB) grind and a lower hook angle (+5 to +6 degrees). More teeth means a smoother finish because each tooth takes a smaller bite. Use them for cutting across the grain.
Combination blades have 40 to 50 teeth arranged in groups of four ATB teeth plus one FTG raker. They handle both rip and crosscuts reasonably well, which avoids frequent blade changes. A 40-tooth combination blade is the most practical single blade for a shop that does both operations.
Plywood and melamine blades have 80+ teeth with a high ATB (Hi-ATB) grind at 30 to 40 degrees. Some use a triple-chip grind (TCG) for hard surfaces. The negative hook angle (-2 to -6 degrees) prevents the blade from self-feeding on miter saws.
Standard blade sizes are 7-1/4 inch (circular saws), 10 inch (table saws and miter saws), and 12 inch (large miter saws). All use a 5/8 inch arbor hole except 12-inch blades, which use a 1-inch arbor.
Kerf width is the most important blade specification for cut list optimization in SmartCutList. Standard blades cut a 1/8 inch (3.2 mm) kerf. Thin-kerf blades cut 3/32 inch (2.4 mm). This difference, multiplied across every cut in a project, determines how much material is lost to sawdust.
Frequently Asked Questions
- How many teeth should a saw blade have?
- For ripping solid wood, use a 24-tooth blade for fast, aggressive cuts. For crosscuts and plywood, use a 60-80 tooth blade for smooth, splinter-free edges. A 40-tooth combination blade handles both tasks reasonably well and is a good general-purpose choice.
- When should I replace my saw blade?
- Replace or sharpen your blade when cuts require more pushing force, burn marks appear on the wood, or edges chip and splinter more than usual. A quality carbide blade can be resharpened 5-10 times before the carbide tips wear too thin. Resharpening costs $15-25 and is worth it for premium blades.
- What is the difference between ATB and FTG saw blades?
- ATB (Alternate Top Bevel) teeth have angled tops that slice wood fibers cleanly, making them ideal for crosscuts and plywood. FTG (Flat Top Grind) teeth have flat tops that chisel through wood quickly, making them best for rip cuts. Combination blades alternate between both tooth styles.
Ready to optimize your cuts?
SmartCutList generates optimized cutting diagrams in 30 seconds. Less waste, fewer sheets, zero cost.
Join the waitlist