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Down-Cut 3/4″ Plywood Dado Bit – 530-DNC720 (AstraHP Coated)

Our undersized plywood router bit is engineered for modern 3/4″ plywood. This 0.72″ diameter triple flute bit features down-cut geometry for clean top edges and a snug fit. Built with a rigid 1/2″ shank for stability and precision, and finished with our AstraHP Coating, this bit stays sharper longer—giving you up to 3X the tool life of uncoated bits, even in tough materials like MDF or veneered plywood. Also available in a 3-piece undersized plywood set. AstraHP Coated Solid Carbide Shank: 1/2″ Tip diameter: 23/32″ (18.2mm) Length of cut: 1-1/8″ Overall length: 3″ Recommended RPM: 16,000 Available for 1/4″ and 1/2″ plywood Also available in 3pc set. Made In USA #row-758327150 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_1426326469 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_1426326469 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_1426326469 { padding-top: 2px; padding-bottom: 2px; } }

Down-Cut 3/4″ Plywood Dado Bit – 530-DNC720 (AstraHP Coated) - Main image
Router bit for 3/4 inch plywood - Bits&Bits AstraHP CoatedRouter bit for 3/4 inch plywood - Bits&Bits AstraHP CoatedRouter bit for 3/4 inch plywood - Bits&Bits AstraHP CoatedUndersized plywood router bits
$83.74 $124.99 In stock

Category: Plywood Dado Router Bits

Cut Clean. Fit Tight. Last Longer.

Our 3/4″ Triple Flute Down-Cut Undersized Plywood Bit is made for one job—cutting perfect dados and grooves in today’s undersized plywood. With a true 0.72″ cutting diameter, it delivers the ideal fit for 3/4″ nominal sheet goods. The down-cut flutes leave a crisp, splinter-free top edge, perfect for cabinet parts and finished surfaces.

Built with a rigid 1/2″ shank for stability and precision, and finished with our AstraHP Coating, this bit stays sharper longer—giving you up to 3X the tool life of uncoated bits, even in tough materials like MDF or veneered plywood.

Pair it with our 3-piece undersized plywood set for matching 1/4″, 1/2″, and 3/4″ bits to cover all your dado needs.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Madison ★★★★★

Finally a bit that actually matches today's undersized 3/4″ plywood—the 0.72″ cutting diameter gave me snug, clean dados right out of the box. The AstraHP coating really does help it stay sharp through multiple cabinet builds.

Richard R. ★★★★★

The 0.72-inch cut width is spot-on for modern plywood, so the joint comes out snug without any sanding. The triple-flute down-cut design keeps the top edge clean, and the AstraHP coating has held up through a dozen dados so far without any burn marks.

Julian ★★★★★

I’ve been struggling with chipping on plywood dados until this down‑cut bit—the triple flute really leaves a smooth, splinter‑free groove. It’s noticeably quieter than my old spiral bits, too.

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