Whiteside UDFT2100 Spiral Up/Down Cut 2+2 Compression Flush Trim Router Bit - 1/4 Dia, 1/4 Shank, 1

Whiteside UDFT2100 Spiral Up/Down Cut 2+2 Compression Flush Trim Router Bit

Engineered for precise flush trimming, this solid carbide bit combines an up cut and a down cut in a single tool. The 2+2 compression design, paired with a double ball bearing guide, helps produce clean edges on a variety of materials and supports smoother follow-through when routing templates.

Design highlights that matter on the shop floor

• Solid carbide construction for longevity and consistent performance
• 2+2 compression geometry merges benefits of both cutting styles, reducing edge tear-out
• 1/4 inch cutting diameter with a 1/4 inch shank and 1 inch cutting length; overall length of 3 inches
• Double bearing guide delivers stable tracking and helps minimize bearing wear
• Compatible with hand routers and router tables using a 1/4 inch collet

Real-world use cases and benefits to expect

In practice, the compression spiral is designed to deliver a cleaner finish on top and bottom surfaces, which can reduce the need for extensive sanding. It is well suited for precise flush trimming of edges in a range of materials, helping you achieve a professional look with fewer passes. Because the design integrates both up cut and down cut edges, you effectively get the performance characteristics of two tools in one, which can save setup time and swapouts during a project.

Project scenarios you might encounter include following templates, duplicating shapes, and trimming edges on hardwoods, softwoods, laminates, and plywoods. Works with natural woods, composites, hard plastics, and even thin aluminum in some setups. The 18,000 to 20,000 RPM range (up to 24,000 RPM max) provides a practical speed window for achieving clean cuts without excessive strain on the bit or router.

Specs at a glance

• Cutting diameter: 1/4 inch • Shank: 1/4 inch • Cutting length: 1 inch • Overall length: 3 inches
• Material: Solid carbide • Cutting action: Up and down cut with compression
• Guidance: Double bearing for enhanced stability
• Applications: Flush trimming in hardwoods, softwoods, laminates, plywoods, composites, hard plastics, and thin aluminum