TechTalk

Drills

Tap Drill Size Chart (Inch & Metric) — With the Right Carbide Drill One Click Away

August 18, 2026

What drill for a 1/4-20 tap? #7 (0.2010"). The complete inch and metric tap drill chart — every size linked...

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End Mills

Solid Carbide vs. HSS End Mills: Which Should You Actually Run?

August 04, 2026

Carbide wins on speed, heat resistance, and rigidity. HSS wins in toughness and forgiveness. A machinist's guide to choosing based...

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AlTiN

Built-Up Edge: Why Material Welds to Your End Mill — and How Coatings and Geometry Stop It

July 28, 2026

Built-up edge ruins finishes, draws dimensions, and chips tools—and it is not bad luck. Why stainless, chromium alloys, and aluminum...

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