DRILLING WITH THE DRILL PRESS Select the correct drill for the hole to be made. Fasten the drill in the chuck. A drill gauge may be used to check the size of a drill. Be certain that the dr ill will wobble and notrun true.
Locate the hole to be drilled by drawing two short, intersecting lines. Use a center punch to make a small dent where they meet.
Fasten the work securely on lhe table of the drill press if it is a small piece, clamp it in a vise. Hold a larger piece with a C-clamp. For small, thin sheet metal, hold the stock with pliers. Be sure that the drill is directory ova’ the hole in the table of the drill press. A piece of scrap wood placed beneath the drill will protect the table.
Adjust the speed according to the drill size and the material. For a fast speed, use the largest pulley on the motor and the smallest pulley on the drill. Use fast speeds for small-diam eter drills and soft metals. Use slower speeds for larger drills and harder metals. Many machines have a variable speed control. Turn lhehandle to thedesired speed as shown on lhedial face.
Turn on the power. Apply even pressure on the feed handle to cut the hole. Use cutting oil as needed.
As the point of toe drill begins to cut through, reduce the pressure to ease toe drill through toe hole. This is especially important in drilling sheet metal. If it is notdone, toe drill may dig in too deeply. Then metal will spin danga-ously or toe drill will break off.
