Twist DRILL-PRESS SPEED CHART drill bit

1 106 Get Started in WoodworkingREFERENCE GUIDEM ulti-spur bits* 250 250 Smaller sizes also available; use Forstner (Pine) Hardwood(Hard Maple)AcrylicBrassAluminumSteelNotesTwis t drill bits*300030001500 75030001500 750 500250020001500 NR30001200 750 400300025001500100030001000 600 350 Lubricate bit with oil when cutting steel " or center punch on all holes to prevent drill from & Decker Bullet pilot-point bits*30003000300030003000150030002400160 020001500150015001000 750300020001200 Good all-around more quickly than a brad- point and a Twist bits*18001800180018001800140012001000120 01000 750 750 500 250 250 2501500150015001000 750 750 500 250 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNR NRNRNRNRR aise smaller bits often to clearshavings and prevent heat buildup. Forstner bits2400240015001000 500 700 500 500 250 250 NR 250 250 250 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRR aise " - " bits often to clear shavingsand prevent heat several shallow plunges with largerbits; allow bit to cool between * 500 500250-500 350 250 NRNRNRNR 250 150 150 250 250 250Do not use with brass or aluminumthicker than ".

2 Avoid dense hardwoods such as bits 750 600 500 400 350 200 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNR NRNRNRNRNRNRNRNRNRNRWear safety goggles. Use in drill pressonly. Do not apply excessive pressure. Lubricate with water while quill pressure when bit tipemerges from back SPEED CHARTR ecommended operating speeds (RPM)(Listed speeds are for glass and tile not softwood.)Twistdrill bitSpade bitBrad-point bitForstner bitGlass-and-tile bitHolesaw Spade bitwith spursMulti- spurbit Spade bits*200017501500150015001000 NRNRNRNRNRNRNRNRNRNRNRNRC lamp work to table to improve qualityof & DeckerBullet pilot-point bit Spade bits with spurs20001800 500 NRNRNRBest bit for work Powerbore bits*18001800 500 750 NRNRNRNRNRNRNRNRI deal for deep holes and end-grain cutters* 500 250 250 250 250 250 NRNRNRNRNRNRD rill one side, flip material over, placecenter bit in its hole, and resume 750 NR 750 NR 250 NR 250 NR 250 Raise and lower frequently for screw-pilot bitsAll sizes15001000 500 500 NRNRC lear Twist drill drill bits with countersinks 5001000 250 500 250 NRNRNRNRNRNRNRC lear bit often to prevent heat sandersHard rubberSoft sleeveless3" pneumatic 750 50017501500 7501750 750 7501750 NRNRNRNRNRNRNRNRNRA void load-up and air pressure for fine " ex-discPolishing wheelsFlap sandersGrinding wheels 75015002000 NR 50015002000 NR 50015002000 NR 50015002000 NR NR20002000 NR NR NR24003000 Adhesive-backed discs work light work 6" or smaller countersinks1000 7501000 700 700 700700-1000 250-700700-1000 250-700 NRNRNR Not recommendedNotesRecommendations are based on visual and tactile tests under shop faster than recommended can cause overheating.

3 Speeds slower than those recommended may cause poor-quality testing done on face grain. Reduce SPEED when drilling into end based on new bits from the wear a face shield for optimum material to prevent sizesAll sizesCuts cleaner than traditional countersinks.*Cut to full depth so bit chamfers cuttersAccessorySoftwood (Pine) Hardwood(Hard Maple)AcrylicBrassAluminumSteelNotesShea r-cuttingcountersinkFlap sanderDrumsander Taper drillbit withcountersinkPlugcutterCountersinkscre w-pilot bitPolishing wheelCountersinkStanleyPowerbore bit Circlecutter GrindingwheelFlex-discsander " - " " - " " - " " - 1" " - " " - " " " " " " " " "1" " - " " - " " - 1"1 " - 1 "1 " - 2" " " " " " "1" - 1 "1 " - 2"2 " - 2 "2 " - 4" " - " " - 1"1 " - 1 " " - 1" " - " " - 1"1 " - 3"3 " - 8" " - " bits* 250 250 Smaller sizes also available; use Forstner (Pine) Hardwood(Hard Maple)AcrylicBrassAluminumSteelNotesTwis t drill bits*300030001500 75030001500 750 500250020001500 NR30001200 750 400300025001500100030001000 600 350 Lubricate bit with oil when cutting steel " or center punch on all holes to prevent drill from & Decker Bullet pilot-point bits*30003000300030003000150030002400160 020001500150015001000 750300020001200 Good all-around more quickly than a brad- point and a Twist bits*18001800180018001800140012001000120 01000 750 750 500 250 250 2501500150015001000 750 750 500 250 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNR NRNRNRNRR aise smaller bits often to clearshavings and prevent heat buildup.

4 Forstner bits2400240015001000 500 700 500 500 250 250 NR 250 250 250 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRR aise " - " bits often to clear shavingsand prevent heat several shallow plunges with largerbits; allow bit to cool between * 500 500250-500 350 250 NRNRNRNR 250 150 150 250 250 250Do not use with brass or aluminumthicker than ". Avoid dense hardwoods such as bits 750 600 500 400 350 200 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNR NRNRNRNRNRNRNRNRNRNRWear safety goggles. Use in drill pressonly. Do not apply excessive pressure. Lubricate with water while quill pressure when bit tipemerges from back SPEED CHARTR ecommended operating speeds (RPM)(Listed speeds are for glass and tile not softwood.)Twistdrill bitSpade bitBrad-point bitForstner bitGlass-and-tile bitHolesaw Spade bitwith spursMulti- spurbit Spade bits*200017501500150015001000 NRNRNRNRNRNRNRNRNRNRNRNRC lamp work to table to improve qualityof & DeckerBullet pilot-point bit Spade bits with spurs20001800 500 NRNRNRBest bit for work Powerbore bits*18001800 500 750 NRNRNRNRNRNRNRNRI deal for deep holes and end-grain cutters* 500 250 250 250 250 250 NRNRNRNRNRNRD rill one side, flip material over, placecenter bit in its hole.

5 And resume 750 NR 750 NR 250 NR 250 NR 250 Raise and lower frequently for screw-pilot bitsAll sizes15001000 500 500 NRNRC lear Twist drill drill bits with countersinks 5001000 250 500 250 NRNRNRNRNRNRNRC lear bit often to prevent heat sandersHard rubberSoft sleeveless3" pneumatic 750 50017501500 7501750 750 7501750 NRNRNRNRNRNRNRNRNRA void load-up and air pressure for fine " ex-discPolishing wheelsFlap sandersGrinding wheels 75015002000 NR 50015002000 NR 50015002000 NR 50015002000 NR NR20002000 NR NR NR24003000 Adhesive-backed discs work light work 6" or smaller countersinks1000 7501000 700 700 700700-1000 250-700700-1000 250-700 NRNRNR Not recommendedNotesRecommendations are based on visual and tactile tests under shop faster than recommended can cause overheating. Speeds slower than those recommended may cause poor-quality testing done on face grain. Reduce SPEED when drilling into end based on new bits from the wear a face shield for optimum material to prevent sizesAll sizesCuts cleaner than traditional countersinks.

6 *Cut to full depth so bit chamfers cuttersAccessorySoftwood (Pine) Hardwood(Hard Maple)AcrylicBrassAluminumSteelNotesShea r-cuttingcountersinkFlap sanderDrumsander Taper drillbit withcountersinkPlugcutterCountersinkscre w-pilot bitPolishing wheelCountersinkStanleyPowerbore bit Circlecutter GrindingwheelFlex-discsander " - " " - " " - " " - 1" " - " " - " " " " " " " " "1" " - " " - " " - 1"1 " - 1 "1 " - 2" " " " " " "1" - 1 "1 " - 2"2 " - 2 "2 " - 4" " - " " - 1"1 " - 1 " " - 1" " - " " - 1"1 " - 3"3 " - 8" " - "