Premium CNC & Router Bits for Precision Cutting

1/4″ Slot Cutter Router Bit x 1/4″ Shank – Whiteside 1912 (AstraHP Coated)

Whiteside’s 1/4″ slot cutter router bit 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. Note: Modern plywood thickness varies; measure your material to select the appropriate cutter size. AstraHP Coated Shank: 1/4″ Kerf (Cut Length): 1/4″ Cut depth: 3/8″ (w/ included B3 bearing) Large Diameter: 1-1/4″ Recommended RPM: 12,000 Made in USA Also available in 1/2″ shank #row-1583164254 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_161588906 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_161588906 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #sectio

1/4″ Slot Cutter Router Bit x 1/4″ Shank – Whiteside 1912 (AstraHP Coated) - Main image
$37.75 $58.99 In stock

Category: Rabbet Router Bit Rabbeting Bits

This Whiteside 1912 slot cutter router bit is designed for creating clean 1/4-inch slots in woodworking projects. Featuring a 1/4-inch shank, it offers compatibility with standard routers and is coated with AstraHP for enhanced durability and performance.

  • 1/4-inch slot cutting width for precise grooves and slots
  • 1/4-inch shank fits most routers and router tables
  • AstraHP coating helps reduce friction and resist wear
  • Ideal for joinery, panel grooves, and decorative slotting tasks
  • Whiteside quality construction for reliable, consistent cuts
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

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

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Michael ★★★★★

I needed a clean 1/4-inch slot for some cabinet work, and this bit cut through maple without any burning. The coating seems to keep it running cooler than my old uncoated bits.

Sophia ★★★★★

The AstraHP coating really does its job—sawdust slides right off and the cut edges come out glass-smooth without any burn marks. I’ve run it through a dozen feet of hardwood plywood and the 1/4-inch slot stays perfectly consistent.

George ★★★★★

Installed this on my compact router for cutting shallow dadoes in maple plywood — the AstraHP coating noticeably reduced burning compared to uncoated bits I've used. The carbide edges came out of the box razor sharp, too, which made the first few cuts surprisingly smooth.