News
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Why Precision Grinding Matters
Series: Why Drill Bits Fail | Article 13 Keywords: precision grinding drill bit, full ground drill bit tolerance, h8 drill bit tolerance, drill bit back taper, web taper, drill bit margin grinding, drill bit surface finish, drill bit batch consistency, interference fit d...Read more -
Full Ground vs. Roll Forged: Two Different Ways to Make a Flute
Series: Why Drill Bits Fail | Article 12 Keywords: roll forged drill bit, full ground drill bit, drill bit manufacturing process, hot rolled drill bit forming, drill bit precision comparison, HSS drill bit material grade, M35 drill bit, 4241 drill bit steel, drill bit fo...Read more -
Parabolic Flute vs. TiN Coating: Two Separate Decisions (And When You Need Both)
The assumption buyers make A gold-colored drill bit gets read as “the upgraded one.” That's not an unreasonable guess — gold-finish TiN coating does show up more often on higher-spec lines. But color only tells you one thing: whether...Read more -
Why Flute Design Affects Chip Evacuation
Series: Why Drill Bits Fail | Article 11 Keywords: drill bit flute design, chip evacuation, drill bit helix angle, parabolic flute drill bit, web thickness, chip packing, deep hole drilling HSS, standard flute vs parabolic flute The last article in this series ...Read more -
Chip Breaker, M35 Cobalt, and a Tri-Flat Shank: What Three Design Choices Actually Solve When Drilling Stainless Steel
Stainless steel drilling problems usually show up as three separate complaints: chips wrapping around the flute and jamming the hole, the shank spinning inside the chuck under load, and the edge going dull faster than expected. Most buyers treat these as three unrelated ...Read more -
Point Angle vs. Different Materials: Why 118° and 135° Both Have a Job to Do
Series: Why Drill Bits Fail | Article 10 Keywords: drill bit point angle, 118 vs 135 drill bit, split point drill bit, HSS drill bit, drill bit selection guide If you sort through enough drill bit inquiries, you notice a pattern. Buyers ask which point angle is "better" ...Read more -
Why 135° Split Point Matters
Series: Why Drill Bits Fail | Article 9 Keywords: 135° split point, split point drill bit, drill point angle, 118° vs 135° point angle, self-centering drill point, chisel edge, drill bit centering geometry The previous article in this series looked at why drill bits walk...Read more -
Why Drill Bits Walk
Series: Why Drill Bits Fail | Article 8 Keywords: drill bit walking, drill bit wandering, off-center drilling, drill point geometry, chisel edge centering, drill bit runout, oversized hole The last three articles in this series dealt with heat treatment: why hardness mat...Read more -
How to Evaluate Drill Bit Heat Treatment Quality
Series: Why Drill Bits Fail | Article 7 Keywords: drill bit heat treatment quality, how to evaluate drill bit quality, HSS drill bit hardness verification, drill bit HRC testing, drill bit quality inspection In the last two articles, we looked at why hardness (HRC) matte...Read more