CMT 310.064.21 Dowel Drill 1/4" x 22 x 57.5mm RH by CMT is a solid carbide boring bit engineered for clean, precise blind-hole drilling in a wide range of panel materials and hardwoods. Built entirely from premium super-micrograin carbide sourced from Ceratizit in Luxembourg, this 1/4" diameter right-hand drill delivers the long-lasting performance and bore quality demanded by furniture manufacturers, cabinet shops, and CNC machining centers. The short-series 57.5mm overall length and 10x27mm parallel shank make it a direct fit for multi-spindle boring machines and CNC routers where consistent, splinter-free dowel holes are essential to production efficiency.

Key Features

• Solid super-micrograin carbide construction (HWM) - the entire bit is made from a single unit of premium carbide, providing exceptional wear resistance and allowing an almost infinite number of resharpenings so the tool stays in service far longer than conventional boring bits.
• Curved, negatively ground spurs (2 spurs) - the unique spur geometry produces exceptionally clean bore walls and flat-bottom holes with no rough edges or tearout, which is critical when drilling veneered panels, coated boards, and hardwood where surface quality matters.
• Centre-point balanced tip design - the balanced centre point keeps the drill tracking true from entry, reducing wander and producing consistently accurate hole placement across high-volume production runs.
• Plunge edge running to the centre of the bit - reduces drilling resistance so the bit enters material more freely, increasing production speed and reducing load on spindle motors during continuous operation.
• 2 cutting edges and 2 spiral flutes (Z2) - the twin-flute geometry evacuates chips efficiently, preventing re-cutting of material that can cause heat buildup and premature edge wear.
• Parallel shank with driving flat (10x27mm) - the precision-ground shank with driving flat seats securely in boring machine chucks and CNC tool holders, eliminating slippage even under high feed rates.
• Extreme sharpening rating - the carbide grade supports repeated professional resharpening without compromising geometry, lowering the long-term cost per hole compared to non-resharpenable boring bits.
• Right-hand (RH) rotation - matches the standard spindle direction of the vast majority of industrial boring machines and CNC machining centers, ensuring straightforward compatibility without special setup.

Why This Product

• Furniture and cabinet producers who need clean, chip-free dowel holes in MDF, particle board, hardwood, and veneered panels will benefit from the negatively ground spur geometry, which eliminates the tearout and rough edges that cause costly rework or rejected parts.
• Shops running high-cycle CNC boring operations can extend tool life significantly because the solid carbide body supports an almost infinite number of resharpenings - reducing tooling costs over time compared to disposable or brazed-tip alternatives.
• The short-series 57.5mm overall length and standard 10x27mm parallel shank with driving flat make this bit a direct drop-in replacement for most multi-spindle boring machines and CNC boring centers without requiring adapters or custom fixturing.
• The plunge edge that runs all the way to the centre of the bit actively reduces drilling resistance, which translates to faster feed rates, less spindle wear, and higher throughput on demanding panel-processing applications.

Specifications

• Manufacturer Part Number: 310.064.21
• Brand: CMT Orange Tools
• Diameter: 1/4"
• Cutting Height: 7/8"
• Total Length: 57.5mm
• Shank: 10x27mm
• Number of Teeth: 2
• Number of Spurs: 2
• Rotation: RH (Right-Hand)
• Material: HWM (Solid Carbide)
• Sharpening: Extreme

Approved Applications

• Blind-hole drilling for dowel joinery and panel connections
• Furniture manufacturing and cabinet making
• Panel drilling in particle board, MDF, and HDF
• Drilling in hardwood and difficult composite materials
• Veneered wood and coated panel processing
• High-speed multi-spindle boring unit operations
• CNC router and CNC boring center applications