The FAMAG 3491 long CV spiral wood drill bit is an economical solution for dimensionally accurate holes in softwoods and some European hardwoods. Featuring a centring spur, two main cutting edges, and protruding knives, it delivers burr-free results without breaking the bank.

🌲 Key Design Features

• Centring Spur: Keeps the bit perfectly on target from the first rotation.

• Dual Main Edges: Two fully ground lips cut clean walls with minimal tear-out.

• Protruding Knives: Trim fibers flush for a smooth bore and easy finishing.

• Low-Cost CV Steel: High-carbon HSS-CV construction balances performance and affordability.

📏 Size Range & Specifications

• Diameter Range: Ø 6 mm to Ø 20 mm in 2 mm increments.

• Overall Length (GL): 250mm.

• Drilling Depth (NL): 190mm for through-hole and blind-hole applications.

• Shank: Matches diameter for Ø 6–9 mm; Ø 10 mm shank for larger sizes.

⚙️ Usage & Speed Recommendations

• Optimal Speeds:

  • Softwoods: 1 500 – 3 000 rpm

  • European Hardwoods: 800 – 1 800 rpm

• Machine Compatibility: Handheld drills, bench drills, and light-duty drill presses.

• Tip: Use a backing board on thin panels to prevent blow-through.

🌟 Benefits & Applications

• Versatile Drilling: Ideal for furniture, cabinetry, and general joinery work.

• Clean Finish: Centering spur and knives guarantee burr-free holes, reducing sanding.

• Cost-Effective: Long-CV steel offers solid durability at an entry-level price.

• Easy Integration: Standard shank sizes fit most chucks without adapters.