20mm Alpen Series 228 Auger Bit – L600mm Long-Reach for Dense Timber

The Alpen Series 228 auger bit is purpose-built for professional woodworkers who demand true, centered holes in dense timber and square timbers. With a 20 mm cutting diameter and a 600 mm reach, this bit lets you drill precise boreholes in tall frames, thick beams, and hard-to-reach joints without repositioning your work.

Why this long-reach auger stands out

Centering accuracy is engineered into every cut, helping to start holes true and stay on axis in tight joinery. The result is cleaner mortises, cleaner dowel holes, and reliable through-holes for hinges, strike plates, and decorative trim. The long reach minimizes the need to move the workpiece mid-task, saving time and maintaining alignment across complex frame carpentry.

• 20 mm cutting diameter for consistent, accurate bore holes in timber.
• 600 mm overall length delivers extended reach for tall frames, thick timbers, and awkward angles.
• High centering precision starts holes true, reducing wander in tight joints and square timbers.
• Sharp cutting edges slice through both hardwood and softwood with minimal tear-out and clean exits.
• Versatile applications ideal for mortises, dowels, and through-holes; perfect groundwork for hinges, strike plates, and decorative trim.
• Professional reliability designed for woodworkers who expect consistent performance in demanding framing and door-jamb prep.

Real-world use cases

Use the Alpen 228 when you need perfectly centered holes in square timber frames, door jambs, or thick beams where repositioning would compromise alignment. It’s especially effective for hinge and strike-plate prep, dowel joinery, and clean, uninterrupted mortises in dense stock.

How to get the best results

1. Secure your workpiece to prevent movement during drilling.
2. Start at a low drill speed to establish a straight entry and reduce skidding.
3. Apply steady, moderate pressure—let the bit do the work without forcing it.
4. Back the bit out periodically to clear chips and maintain cutting efficiency.
5. Use a light lubricant to minimize heat buildup and extend the blade life.

About Alpen: Trusted by professional woodworkers for precision and consistency, Alpen tools are built to tackle demanding framing, joinery, and hardware prep tasks. The Alpen Series 228 auger bit pairs long-reach convenience with centered, clean holes, helping you complete frame carpentry and door-jamb preps faster and with superior accuracy.