DRILL BIT SPEEDS(In RPM - Optimum conditions. You may have to alter the suggested speed for best performance in your situation.) |
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| Twist Drills | Soft Wood | Hardwood |
| 1/16 - 3/16 | 3000 | 3000 |
| 1/4 - 3/8 | 3000 | 1500 |
| 7/16 - 5/8 | 1500 | 750 |
| 11/16 - 1 | 750 | 500 |
| Brad Point | Soft Wood | Hardwood |
| 1/8 | 1800 | 1200 |
| 1/4 | 1800 | 1000 |
| 3/8 | 1800 | 750 |
| 1/2 | 1800 | 750 |
| 5/8 | 1800 | 500 |
| 3/4 | 1400 | 250 |
| 7/8 | 1200 | 250 |
| 1 | 1000 | 250 |
| Forstner | Soft Wood | Hardwood |
| 1/4 - 3/8 | 2400 | 700 |
| 1/2 - 5/8 | 2400 | 500 |
| 3/4 - 1 | 1500 | 500 |
| 1 1/8 - 1 1/4 | 1500 | 250 |
| 1 3/8 - 2 | 500 | 250 |
| Spade | Soft Wood | Hardwood |
| 1/4 - 1/2 | 2000 | 1500 |
| 5/8 - 1 | 1750 | 1500 |
| 1 1/8 - 1 1/2 | 1500 | 1500 |
| Circle Cutters | Soft Wood | Hardwood |
| 1 1/2 - 3 | 500 | 250 |
| 3 1/4 - 8 | 250 | 250 |
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