Router Bit Selection Guide: Match the Right Bit to Every Woodworking Project

Walk the router bit aisle at any woodworking supplier and the options are overwhelming — straight bits, spiral bits, dovetail bits, roundover bits, flush trim bits, rabbeting bits, stile-and-rail sets, raised panel bits... the list goes on. And within each category, you're choosing between carbide grades, cutting depths, shank sizes, and brands like CMT, Amana, Freud, and Whiteside.

This guide cuts through the confusion. Whether you're a weekend DIYer building a bookshelf or a production cabinet shop running 50 raised panel doors a week, we'll help you select the exact router bit for the job — with brand recommendations tailored to your application and budget.

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Router Bit Basics: Anatomy & Materials

Before we get to selection, here's what separates a great router bit from a mediocre one:

Carbide Grade

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What this means for you: CMT uses C4 micro-grain carbide — the finest available — for razor edges that last longer between sharpenings. Amana uses thick C3–C4 tips for more resharpening cycles. Freud and Whiteside use C3-grade carbide with proprietary coatings. Toolco uses C2 carbide for solid performance at competitive prices.

Shank Size: 1/4" vs. 1/2"

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Rule of thumb: If your router accepts 1/2" shanks, use them. Always. The difference in stability and cut quality is significant, especially on bits over 1" cutting diameter.

Bearing-Guided vs. Non-Guided

Bearing-guided (piloted): Follow a template or edge — ideal for flush trimming, pattern routing, and decorative profiles
Non-guided: Require a fence, jig, or guide bushing — better for grooves, dadoes, mortises, and freehand work

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Router Bit Types by Application

1. Straight Bits — The Workhorse

What they do: Cut flat-bottomed grooves, dadoes, rabbets, and mortises. The most versatile bit in any shop.

Selection criteria:

Diameter: Match the width of your groove or dado (1/8" to 1-1/2")
Cutting length: Should exceed your depth of cut by at least 1/4"
Number of flutes: 2-flute for clean cuts in hardwood; 1-flute (spiral) for fast chip evacuation in softwood

Brand pick: CMT 811 Series — C4 carbide, anti-kickback design, PTFE coating. For budget-conscious production, Toolco straight bits deliver solid value.

Shop straight bits → CMT Straight Bits | Toolco Straight Bits

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2. Spiral Bits — Upcut, Downcut, and Compression

What they do: Spiral bits combine shearing action with efficient chip evacuation. The direction of the spiral determines where the chips go and which side gets the cleanest cut.

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When to choose spiral over straight:

Cutting plywood, melamine, or double-sided laminates → compression spiral (zero tear-out on both faces)
Deep mortising or through-cuts → upcut spiral (chips clear fast, less burning)
Shallow cuts where top surface matters → downcut spiral (clean top edge)

Brand pick: Whiteside makes some of the most respected spiral bits in the industry — ground from solid carbide with aggressive shear angles. CMT's spiral offerings feature their signature PTFE coating for reduced friction.

Shop spiral bits → Whiteside Spiral Bits | CMT Spiral Bits

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3. Flush Trim Bits — Pattern Routing Perfection

What they do: Trim one surface flush to another using a bearing that rides along the reference edge. Essential for template routing, laminate trimming, and box making.

Selection criteria:

Cutting length: Must be at least as long as the material you're trimming
Bearing size: Larger bearings are more stable; some come with multiple bearings for different offsets
Top-bearing vs. bottom-bearing: Top-bearing lets you trim from the face side; bottom-bearing rides on the back

Pro tip: For template work, a top-and-bottom-bearing flush trim bit gives you the option to approach from either side — invaluable when the template and workpiece thicknesses don't match.

Brand pick: CMT 811 Series flush trim bits with PTFE coating resist pitch buildup. Amana's flush trim offerings include innovative multi-bearing configurations for maximum versatility.

Shop flush trim bits → CMT Flush Trim | Amana Flush Trim

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4. Stile-and-Rail & Raised Panel Bits — Cabinet Door Sets

What they do: Stile-and-rail sets cut the decorative profile and the coping (tenon) on door frame components. Raised panel bits create the raised center panel. Together, they produce professional cabinet doors.

This is where brand choice matters most. Stile-and-rail sets must match precisely — the cope cut must seat perfectly into the stick profile. Manufacturing tolerances here separate professional results from frustrating gaps.

Selection criteria:

Set vs. individual bits: Buying a matched set ensures perfect profile alignment
Panel bit style: Horizontal (safer, more control) or vertical (smaller, less torque)
Bearing-guided vs. non-guided: Bearing-guided sets are easier for beginners; non-guided sets require a router table fence but offer more control at the table

Brand pick: Amana Tool produces the widest selection of cabinet door profiles in the industry — from classic ogee to modern shaker. CMT's matched stile-and-rail sets feature their anti-kickback body for table-router safety. Freud offers excellent value in entry-level cabinet door sets.

Shop cabinet door bits → Amana Stile-and-Rail | CMT Cabinet Door Sets | Freud Router Bits

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5. Dovetail Bits — Joinery Precision

What they do: Cut dovetail joints for drawers, boxes, and structural joinery. Available in multiple angles (typically 7°, 8°, 9°, 10°, and 14°) and various diameters.

Selection criteria:

Angle: 7°–8° for fine furniture; 9°–10° for general cabinets; 14° for quick, strong utility joints
Diameter: Match to your dovetail jig's requirements (most jigs specify the bit size)
Cutting depth: Must accommodate the full depth of your tail or pin cuts

Brand pick: Whiteside dovetail bits are the go-to for many jig manufacturers — they recommend Whiteside by name. CMT and Freud dovetail bits offer excellent value at lower price points.

Shop dovetail bits → Whiteside Dovetail | CMT Dovetail

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6. Roundover, Chamfer & Edge-Forming Bits — The Finishing Touch

What they do: Create decorative edges that transform a simple board into finished furniture and trim.

Common edge profiles:

| Bit | Profile | Typical Use |

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| Roundover | 1/8"–1-1/2" radius | Table edges, shelving, drawer fronts |

| Chamfer | 15°–45° bevel | Tabletops, picture frames, contemporary trim |

| Ogee | S-curve (cove + bead) | Traditional furniture, crown moulding |

| Cove | Concave radius | Chair rails, decorative trim |

| Beading | Small quarter-round + fillet | Traditional casework, period moulding |

Brand pick: Amana offers the most comprehensive edge-forming catalog with hundreds of profiles. CMT's edge bits feature PTFE coating that's especially useful on resinous woods where pitch buildup ruins cuts. Freud roundover bits are widely available and well-priced for standard profiles.

Shop edge-forming bits → Amana Edge Bits | CMT Edge Bits

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7. Rabbeting Bits — Essential Joinery

What they do: Cut a step (rabbet) along the edge of a board for joinery, backs, and panel insets. Usually sold as a set with multiple bearings for different rabbet depths.

Why a set beats a fixed-size bit: Interchangeable bearings convert one rabbeting bit into 5–7 different sizes, making it one of the most versatile bits in your collection.

Brand pick: Freud's rabbeting set is a best-seller for good reason — excellent value with carbide tips that hold up. CMT's rabbeting set adds their PTFE coating for even cleaner cuts in pitchy woods.

Shop rabbeting bits → Freud Rabbeting Set | CMT Rabbeting Set

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Router Bit Selection Quick-Reference

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Router Bit Maintenance: Extending the Life of Your Investment

Quality carbide router bits are an investment. Here's how to protect it:

Cleaning

After every use: Remove pitch and resin with a dedicated bit cleaner or lacquer thinner. Don't use abrasives — they'll round the carbide edge.
Soak method: For stubborn buildup, soak bits in a cleaning solution for 10–15 minutes, then wipe clean with a soft cloth.
PTFE-coated bits (CMT): Require less frequent cleaning — the orange coating resists pitch accumulation.

Storage

Store bits individually — contact between carbide edges will chip them
Keep in the original case or a router bit organizer
Store in a dry environment — humidity can cause steel shanks to corrode

Sharpening

Have bits professionally sharpened at the first sign of dullness — don't wait until they're burning wood
Professional sharpening removes only the minimum material needed to restore the edge
Most router bits can be sharpened 4–8 times before replacement
Carbide Saws Inc. (our sister company) offers professional router bit sharpening and repair — call (800) 578-7197 or ship to 701 Garrison Street, High Point, NC 27260

When to Replace

Carbide tip height below 1/16" after multiple sharpenings
Chipped or broken carbide tips (repair may be possible — call for assessment)
Bent or damaged shank
Bearing that wobbles or seizes (replacement bearings are available separately)

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Buying Guide: Building Your Router Bit Collection

The Essential Starter Set (Under $150)

| Bit | Size | Why You Need It |

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| Straight bit | 1/4" dia. × 1" cut | Grooves, dadoes, mortises |

| Straight bit | 1/2" dia. × 1" cut | Wider dadoes, pockets |

| Flush trim bit | 1/2" dia. × 1" cut, top bearing | Pattern routing, trimming |

| Roundover bit | 1/4" radius | Edges, softening corners |

| Chamfer bit | 45° | Beveled edges, picture frames |

| Rabbeting bit | Multi-bearing set | Joinery, panel inset, backs |

| Spiral upcut bit | 1/4" dia. × 1" cut | Mortises, through-cuts |

| V-groove bit | 90° | Sign making, decorative grooves |

The Cabinet Shop Set (Add to Starter)

| Bit | Size | Why You Need It |

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| Stile-and-rail set | Matched cope + stick | Cabinet door frames |

| Raised panel bit | Horizontal | Cabinet door panels |

| Compression spiral | 1/2" dia. × 1-1/2" cut | Plywood, melamine |

| Dovetail bit | 14° × 1/2" dia. | Drawer dovetails |

| Dado cleanout | 1/2" dia. × 2" cut | Wide dadoes, lap joints |

| Ogee bit | 3/8" radius | Traditional edge profiles |

The Full Production Shop

Add custom profiles, specialized bits (lock miter, finger joint, finger pull, hinge mortise), and backup sets of your most-used bits. Call us at 1-800-578-7197 for volume pricing.

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Why Buy Router Bits from Burnette Tools?

Free shipping on orders $75+ — nationwide, no exceptions
Expert phone consultation — call 1-800-578-7197 and talk to someone who actually uses these tools
Full brand selection — CMT, Amana Tool, Freud, Whiteside, Toolco, FS Tools, Freeborn, and Royce Tooling
Factory-authorized service — through our sister company Carbide Saws Inc., an authorized Freud service center for sharpening and repair since 1954
1-day shipping on in-stock items — your bits ship within one business day
Wholesale pricing — available for production shops, cabinet operations, and distributors

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The Bottom Line

The right router bit makes the difference between a cut you're proud of and a cut you have to sand away. Match the bit to the application, the brand to your budget, and the shank to your router — and you'll get clean, professional results every time.

Whether you need a single replacement bit or a full production shop set, Burnette Tools has you covered — with the widest brand selection, free shipping on orders $75+, and expert advice just a phone call away.

Shop router bits now at burnettetools.com or call 1-800-578-7197 for personalized recommendations and wholesale pricing.

Burnette Tools (DBA Carbide Saws Inc.) — Premium carbide saw blades, router bits, and cutting tools since 1957. Authorized distributor and service center. 1-800-578-7197.