How much extra depth should I add for a through hole?

For through holes, add the full drill point length plus 0.5–1.0 mm to ensure the drill breaks through cleanly. This prevents a 'ring' from remaining at the breakthrough point. For thin materials (

Does drill point angle affect hole straightness?

Yes. A flatter point angle (135°) provides better self-centering and reduces walk on uneven surfaces. For deep holes exceeding 5× diameter, a 135° split point significantly improves hole straightness compared to a standard 118° point.

How do I measure drill point length accurately?

Use a drill point gage or optical comparator for the most accurate measurement. For shop-floor measurement, the 'witness mark' method: drill into a flat plate, measure the depth to full diameter using a depth mic on the impression, and compare with your programmed depth. ⚡ Calculated for Carbide-Tooling.com High-Performance Series. View Catalog →

Calculadora de longitud de punto de perforación | Herramienta de mecanizado de precisión

📏Profundidad del agujero requerida (mm)

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Ángulos de punto de perforación estándar y sus aplicaciones

Point Length

—

Total Z-Depth

—

Point Ratio

—

× diameter

For Through-Hole

—

mm Z

Fórmula: L = (D/2) / tan (punto_ángulo/2). Agregue esto a su profundidad Z para agujeros pasantes.

🔺Ángulo de punto

📏Profundidad del agujero requerida (mm)

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🔺Ángulo de punto