Spiral cutting drill bit Makita Nemesis B-20030 diameter 2 cm

The Makita Nemesis spiral cutting drill bit with a 2 cm diameter is engineered for precision drilling across a range of common materials. This single-piece drill bit features a spiral flute design that promotes efficient chip evacuation and consistent performance. Its robust construction supports repeatable, clean cuts whether used in hand-held drills or drill presses, making it suitable for professional and DIY tasks that require larger-diameter holes.

Advantages

The spiral flute geometry improves chip removal and reduces heat buildup, helping maintain cutting efficiency over extended use. A durable cutting edge and solid shank design provide stable centering and reduced wobble during drilling. The 2 cm diameter offers a balance between speed of material removal and control, enabling neat holes with minimal finishing required.

Suitable for

• Drilling large-diameter holes in wood and wood-based materials
• Creating holes in soft plastics and composite materials
• Construction and renovation tasks that require repeatable, clean openings

Key specifications

• Cutting diameter: 20 mm
• Spiral flute design for efficient chip evacuation
• Single-piece construction with solid shank
• Intended for use with electric drills and drill presses
• Suitable for wood, plastics, and similar materials

How to use

Secure the drill bit firmly in the chuck of your drill or drill press, ensuring proper alignment and tight clamping. Select an appropriate drill speed for the material: moderate speeds for plastics and higher speeds for softer woods, while avoiding excessive speed that can cause melting or burning. Apply steady, controlled pressure and allow the spiral flutes to clear chips; withdraw occasionally for deep holes to remove accumulated material. Finish the hole by reducing feed pressure as the bit exits the material to minimize splintering.

Usage recommendations

For best results, use cutting lubricant or air cooling when drilling plastics to prevent melting, and clamp workpieces securely to maintain alignment. Inspect the cutting edge before use and replace the bit when wear affects hole quality. Match drill speed and feed to the material for consistent, clean holes.