Somta Long Series Drill - HSS-E Parabolic Flute - 2.3mm

The Somta Long Series Drill - HSS-E Parabolic Flute - 2.3 mm is built for serious deep-hole work where precision and endurance matter. This extended-length drill cuts through thick materials with confidence, delivering accurate, repeatable holes from top to bottom.

• Long-length design for deep holes — reach through substantial workpieces without sacrificing alignment or control, making it ideal for fabrication, maintenance, and assembly tasks.
• HSS-E construction for durability — high-speed steel with enhanced heat and wear resistance to withstand demanding drilling and maintain edge life under tougher metals and alloys.
• Parabolic flute geometry for efficient chip evacuation — minimizes cutting forces and heat buildup, promoting smoother penetration and cleaner hole finishes in a single pass.
• Sharp cutting edges and consistent diameter — designed to produce precise, burr-free holes with dependable tolerance across the depth, reducing rework.
• Versatile across common metals — optimized for steel, aluminum, and other alloys encountered in everyday machining, maintenance, and prototyping work.

When to reach for this drill

• Deep-hole drilling in structural steel or thick aluminum blocks where standard drills struggle to maintain straightness.
• Jig and fixture fabrication, where creating accurately positioned, uniform holes accelerates assembly and reduces variability.
• Repair or modification projects that require clean, precise holes through multi-layer assemblies.

Practical tips for best results

• Balance speed and feed to prevent overheating; keep a steady, moderate feed rate during penetration.
• Use coolant or cutting oil to extend tool life and improve surface finish in metals.
• Pause periodically to clear chips in deep holes, ensuring uninterrupted cutting and preventing binding.
• If you’re guiding the drill with precision jigs, a light pilot hole can improve alignment on tougher materials.