Drill Troubleshooting Chart
| Problem | Cause | Solution |
| Heavy Wear at Outer Edge |
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| Chipping at Outer Cutting Edge |
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| Drill Point Chipping |
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| Margin Wear |
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| Tool Breakage |
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| Poor Tool Life |
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| Drill Walk |
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| Chip Welding |
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| Hole Size Inaccuracy |
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| Non-Cylindrical Hole |
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| Heavy Burr |
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| Blue Chips |
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| Long Chips |
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| Solutions Key | 1)
Reduce RPM 2) Increase feed 3) Increase RPM 4) Reduce feed 5) 6) 7) Add negative hone |
8)
Repoint drill 9) Correct drill type/size 10) Use self-centering drill 11) Spot/center drill 12) Clean surface 13) Improve rigidity/clamp 14) Tighten holder |
15) Use
straight flute 16) Use stub length 17) Place further up holder 18) Use three-flute 19) Use slower helix 20) Use parabolic design 21) Change point style |