DRILL PRESS SPEED CHART

1 DRILL PRESS SPEED CHARTR ecommended operating speeds (RPM)AccessorySoftwood (Pine) Hardwood(Hard Maple)AcrylicBrassAluminum SteelShop NotesTwist DRILL bits*300030001500 75030001500 750 500250020001500 NR30001200 750 400300025001500100030001000 600 350 Lubricate DRILL with oil when cutting steel1/8" or center punch on all holes to preventdrill from " - 3/16"1/4" - 3/8"7/16" - 5/8"11/16" - 1"Black & Decker Bullet pilot-point bits*1/8" - 3/16"1/4" - 3/8"1/2"30003000300030003000150030002400 160020001500150015001000 750300020001200 Good all-around cut more quickly than brad pointsand twist bits*1/8"1/4"3/8"1/2"5/8"3/4"3/8"1"18001 80018001800180014001200100012001000 750 750 500 250 250 2501500150015001000 750 750 500 250 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNR NRNRNRNRR aise 1/4" and smaller bits often to clearshavings and prevent heat " - 3/8"1/2" - 5/8"3/4" - 1"11/8" - 11/4"13/8" - 2"Forstner bits2400240015001000 500 700

2 500 500 250 250 NR 250 250 250 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRR aise 1/4-3/8" bits often to clear shavingsand prevent heat several shallow passes with largerbits; allow bit to cool between spur bits* 250 250 Smaller sizes also available; use bits*200017501500150015001000 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRC lamp work to table to improve qualityof bits with spurs20001800 500 NRNRNRBest bit for work Powerbore bits*18001800 500 750 NRNRNRNRNRNRNRNRI deal for deep holes and end-grain saws* 500 500250-500 350 250 NRNRNRNR 250 150 150 250 250 250Do not use with brass or aluminumthicker than 1/16".Avoid dense hardwoods such as bits 750 600 500 400 350 200 NRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNRNR NRNRNRNRNRWear safety goggles. Use DRILL pressonly. Do not apply excessive pressure. Lubricate with water while quill pressure when bit tipemerges from back "3/16"1/4"5/16"3/8"1/2"1" - 11/2"15/8" - 2"21/8" - 21/2"21/8" - 4"1/4" - 1/2"5/8" - 1"11/8" - 11/2"3/8" - 1"3/8" - 1/2"3/4" - 1"(Listed speeds are for glass and tile not softwood.)

3 StanleyPowerbore bitHole sawGlass-and-tile bitMulti spurbitForstner bitBrad-point bitSpade bitSpade bitwith spursTwistdrill bitBlack & DeckerBullet pilot-point bitRecommended operating speeds (RPM)Circle 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 500 250 250 NRNRNRC lear bit often to prevent heat sandersHard rubberSoft sleeveless3" pneumatic 750 50017501500 7501750 750 7501750 NRNRNRNRNRNRNRNRNRA void load-up and air pressure for fine " flex discsPolishing 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.

4 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 - 3"31/4" - 6"1/4" - 3/8"All sizesCuts cleaner than traditional countersinks.*Plug cuttersFlex disc sanderGrinding wheelCirclecutterFlap sanderPolishing wheelShear-cuttingcountersinkCountersink screw pilotbitTaper drillbit withcountersinkDrumsanderPlugcutterCount ersink1000 500 NRNRNRNRCut to full depth so bit chamfers sizes