News
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Why Weight Cannot Identify HSS Quality
Series: Why Drill Bits Fail | Article 3 Keywords: HSS drill bit quality, drill bit weight, drill bit hardness, HSS density, drill bit quality inspection, how to evaluate drill bits Some buyers weigh drill bits when evaluating a new supplier’s samples. The heavier the bit...Read more -
HSS-Co M35 Spot Weld Drill Bits: How to Remove Automotive Spot Welds Without Damaging the Lower Panel
In automotive body repair, one of the most common mistakes technicians make when separating panels is reaching for a standard twist drill. The result is almost always the same: the bit punches straight through both layers of sheet metal, leaving the lower panel damaged a...Read more -
Read the Chips, Know the Drill: How Chip Shape Reveals What Is Really Happening Inside Your Hole
Chips are the one part of the drilling process that most operators never look at twice. They sweep them off the table, clear the flutes, and move on. That is a missed opportunity. Chips are the health report of your drilling operation. They tell you whether your paramete...Read more -
Why M35 Is Not Always “Real M35″
Series: Why Drill Bits Fail | Article 2 Keywords: M35 cobalt drill bits, HSS M35, cobalt drill bit quality, drill bit material verification, M35 vs M2 When buyers specify M35 cobalt drill bits, they are making a reasonable decision. M35 — high speed steel with approximat...Read more -
Why Good Steel Is Only the Beginning
Series: Why Drill Bits Fail | Article 1 Keywords: HSS drill bits, M35 cobalt drill bits, drill bit material quality, drill bit manufacturing, high speed steel When buyers ask about drill bit quality, the first question is almost always about material. “Is it HSS?” “Is it...Read more -
Drilling stainless steel: what you need to get right
Stainless steel is one of the most demanding materials to drill. Unlike mild steel or aluminium, it punishes poor technique and wrong tooling quickly and visibly — through broken bits, oversized holes, and rough surface finishes. This guide explains why stainless steel b...Read more -
DIN 333 Type A vs. Type B Center Drills: How to Choose the Right One
When engineers and buyers specify a DIN 333 center drill, one of the most common questions we receive is: "What's the difference between Type A and Type B — and which one do I actually need?" It's a fair question. Both types share the same 60° chamfer angle, follow the s...Read more -
What Are M42, M35, and M2 HSS Drill Bits? A Practical Guide to Choosing the Right Grade
When buyers ask us about HSS drill bits, one of the most common questions is: "What's the difference between M42, M35, M2 — and what about 4341?" It's a fair question. All of them are high-speed steel (HSS) materials, and on the surface, they look nearly identical. But t...Read more -
What Are Double-Ended Drill Bits?
Introduction In metal fabrication and industrial drilling, tool life and procurement cost are two of the most critical factors for buyers. Double-ended drill bits — also known as reversible drill bits or twin-point drill bits — offer...Read more