Craftsman 11580 Operation Manual - Page 17

[] If thebit jamsintheworkpieceor ifthedrillstalls, stopthetoolimmediatelyR.emovethe bitfromthe workpieceanddeterminethereasonforjamming. NOTET: hisdrillhasanelectricbrakeW. hentheswitch triggeris releasedt,hechuckstopsturning.Whenthe brakeisfunctioningproperlys,parkswillbevisiblethrough theventslotsonthehousingT. hisis normaal ndisthe actionof thebrake. WOODDRILLING Formaximumperformanceu,sehighspeedsteelbitsfor wooddrilling. [] Selectnormadl rillingmode. [] Begindrillingata verylowspeedto preventhebit fromslippingoffthestartingpoint.Increastehe speed asthedrillbit bitesintothe material. [] Whendrillingthroughholes,placea blockofwood behindtheworkpieceto prevenrtaggedor splintered edgesonthebacksideofthe hole. LEVEL METAL DRILLING For maximum performance, use high speed steel bits for metal or steel drilling. [] Select normal drilling mode. [] Begin drilling at a very low speed to prevent the bit from slipping off the starting point. [] Maintain a speed and pressure which allows cutting without overheating the bit. Applying too much pressure will: • Overheat the drill; Wear the bearings; Bend or burn bits; and Produce off-center or irregular-shaped holes. [] When drilling large holes in metal, start with a small bit, then finish with a larger bit. Also, lubricate the bit with oil to improve drilling action and increase bit life. MASONRY DRILLING For maximum performance, use carbide-tipped masonry impact bits when drilling holes in brick, tile, concrete, etc. [] Slide adjustment button on hammer drill left for hammer mode. [] Apply light pressure and medium speed for best results in brick. [] Apply additional pressure for hard materials such as concrete. [] When drilling holes in tile, practice on a scrap piece to determine the best speed and pressure. Begin drilling at a very low speed to prevent the bit from slipping off the starting point. Fig. 16 17