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Drill Bit Speed - Hardwood and Softwood

Hardwood and softwood drill speed chart

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Recommended drill bit speed in hardwood and softwood are indicated below:

Diameter
(in)
Speed (rpm)
Softwood (Pine)Hardwood (Hard Marple)AcrylicBrassAluminumSteel
Twist drill bits
1/16 - 3/16 3000 3000 2500 3000 3000 3000
1/4 - 3/8 3000 1500 2000 1200 2500 1000
7/16 - 5/8 1500 750 1500 750 1500 600
1 1/16 - 1 750 500 - 400 1000 350
Brad-point bits
1/8 1800 1200 1500 - - -
1/4 1800 1000 1500 - - -
3/8 1800 750 1500 - - -
1/2 1800 750 1000 - - -
5/8 1800 500 750 - - -
3/4 1400 250 750 - - -
7/8 1200 250 500 - - -
1 1000 250 250 - - -
Forstner bits
1/4 - 3/8 2400 700 - - - -
1/2 - 5/8 2400 500 250 - - -
3/4 - 1 1500 500 250 - - -
1 1/8 - 1 1/4 1000 250 250 - - -
1 3/8 - 2 500 250 - - - -
Spade bits
1/4 - 1/2 2000 1500 - - - -
5/8 - 1 1750 1500 - - - -
1 1/8 - 1 1/2 1500 1000 - - - -
1 5/8 - 2 1200 700 - - - -
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