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3/8″ Slot Cutter Router Bit x 3/8″ Cut Length – Whiteside 1918 (AstraHP Coated)

Whiteside’s 3/8″ slot cutter router bit can double as a rabbet router bit and will shine anywhere you need a clean, consistent groove: drawer bottoms, cabinet backs, frame-and-panel work, spline joinery, decorative inlays, edge‑banding kerfs, or even the slot for T‑molding on arcade cabinets and furniture. Fast to set up, leaves a glue‑ready surface, and helps you hit exact fits without multiple passes. Changing the bearing size to vary your cutting depth, click here to see available bearings AstraHP Coated Shank: 1/2″ Kerf (Cut Length): 3/8″ Cut depth: 3/8″ (w/ included B3 bearing) Large Diameter: 1-1/4″ Recommended RPM: 12,000 Made in USA #row-1632714037 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_137198017 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_137198017 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_137198017 { padding-top: 2px; padding-bottom: 2px; } }

3/8″ Slot Cutter Router Bit x 3/8″ Cut Length – Whiteside 1918 (AstraHP Coated) - Main image
Slot Cutter Router BitAstraHP Coated Whiteside 1918 - 3/8" rabbeting router bitAstraHP Coated Whiteside 1918 - 3/8" rabbeting router bit
$44.63 $71.99 In stock

Category: Rabbet Router Bit Rabbeting Bits

This Whiteside 1918 slot cutter router bit is designed for precise rabbeting and slot-cutting tasks. It features a 3/8-inch cutting diameter and a 3/8-inch cut length, making it a versatile choice for woodworking projects that require clean, accurate cuts. The AstraHP coating enhances durability and helps reduce friction for smoother operation.

  • 3/8-inch slot cutter diameter with a 3/8-inch cut length for consistent rabbets and slots.
  • AstraHP coated for improved wear resistance and smoother cutting performance.
  • Whiteside quality construction, a trusted name in router bits.
  • Suitable for use in a variety of woodworking applications.
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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)

Timothy R. ★★★★★

I was cutting a dado in some maple plywood and this bit left a glass-smooth finish right out of the box—no burning or tearout at all. The 3/8-inch cut length is perfect for my cabinet backs, and the coating seems to help keep the chips moving cleanly.

Thomas Z. ★★★★★

The AstraHP coating honestly makes a difference—the bit glides through hardwood rabbets with zero burn marks, and the 3/8″ cut length handled my shelf dadoes in a single pass. I've used cheaper cutters that chattered, but this one leaves a clean, square shoulder every time.

Jacob I. ★★★★★

The AstraHP coating is doing its job—no gumming up after a full afternoon of slotting in hardwood, and the 3/8" cut length handled my cabinet back panels cleanly. Edges came out crisp with zero tearout, even on tricky grain.

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