Premium CNC & Router Bits for Precision Cutting

1/2″ Half Round Router Bit x 1/4″ Shank – Whiteside 1428 (AstraHP Coated)

Half Round bits cut a full 180 degree design along the edge of the workpiece. For a less prominent cut, try the Oval Edge bits . A fence is required for work on a router table, and an edge guide is necessary for applications with a hand router. AstraHP Coated Shank Diameter: 1/4″ Cut Radius: 1/4″ Cutting Length: 1″ Large Diameter: 1-1/8″ Recommended RPM: 12,000 Available with 1/2″ shank Made In USA

1/2″ Half Round Router Bit x 1/4″ Shank – Whiteside 1428 (AstraHP Coated) - Main image
$62.07 $96.99 In stock

Category: Half Round (Bull Nose) and Oval Edge Router Bits

This Whiteside 1428 half round router bit, featuring an AstraHP coating, is designed for creating clean half-round (bull nose) profiles and oval edges in your workpiece. The 1/2-inch cutting diameter and 1/4-inch shank make it a versatile choice for many routing tasks.

  • Half round (bull nose) profile for decorative edging and joinery.
  • 1/2-inch cutting diameter with a 1/4-inch shank for compatibility with standard routers.
  • AstraHP coating helps reduce friction and heat buildup for smoother cuts.
  • Whiteside quality construction for reliable performance.
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 (4.8 / 5 · 5 reviews)

Lucy R. ★★★★★

I’ve been cutting a lot of bullnose profiles for cabinet door edges, and the AstraHP coating on this bit really helps keep it cooler during longer runs. Cuts are clean with no burn marks.

Madison ★★★★★

The 1/4-inch shank fits my trim router perfectly, and the half-round profile came out silky smooth on a piece of oak—no burning or tear-out even at a decent feed rate. I’ve used cheaper bits that left fuzz, but this one cut like it was greased, and the coating still looks brand new after a dozen pas

Isabella ★★★★★

The AstraHP coating truly shines here—it pushed through a dozen oak edge-routing passes without any burn marks or buildup. The 1/2-inch cutting diameter gives a clean, consistent bullnose profile that needed barely any sanding afterward.