1. What is Drill Tip Length?

The drill tip length is the distance from the tip of a drill bit to the point where the full diameter begins. This measurement is important for determining the exact depth needed when drilling to ensure proper hole depth.

2. How Does the Calculator Work?

The calculator uses the drill tip length formula:

Where:

• \( Diameter \) — Drill bit diameter (inches)
• \( Angle \) — Point angle of the drill bit (degrees)
• \( \tan \) — Tangent trigonometric function

Explanation: The formula calculates the length of the conical tip based on the drill's diameter and point angle.

3. Importance of Tip Length Calculation

Details: Knowing the exact tip length is crucial for precision drilling operations where exact hole depth is required, especially in manufacturing and metalworking applications.

4. Using the Calculator

Tips: Enter the drill bit diameter in inches and the point angle in degrees (typically 118° or 135° for standard drill bits). Both values must be positive numbers, with angle between 0-180 degrees.

5. Frequently Asked Questions (FAQ)

Q1: What's the standard point angle for drill bits?
A: 118° is standard for general purpose drilling, while 135° is better for harder materials.

Q2: Why is tip length important?
A: It affects the actual hole depth - the tip doesn't produce a full-diameter hole, so you need to drill deeper by the tip length.

Q3: Does this work for any drill bit shape?
A: This formula is for standard conical-point drill bits. Special shapes like center drills require different calculations.

Q4: How accurate is this calculation?
A: It's mathematically precise for perfect conical points. Real-world bits may have slight variations.

Q5: Can I use this for metric measurements?
A: Yes, but ensure all units are consistent (use mm for both diameter and tip length).