Tool Grinder how-to
How to Sharpen a Twist Drill
Correct angles make drills cut true.
Quick answer
Correct angles make drills cut true. In short: check; set; grind, then complete the remaining steps below.
Step by step
Check the point angle.
Set the fixture.
Grind one lip.
Rotate and grind the other.
Check lip length.
Test.
Safety reminders for tool grinders
- Use wheel guards
- Wear eye and respiratory protection
- Ring test wheels
- Handle sharp tools carefully
Key terms
Rake angle · Relief angle · Flute · Helix angle · Point angle · Diamond wheel: see the full tool grinder glossary.