How to use a drill bit?
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With a little attention to a few small details, drills can cut deep holes in wood with little effort on the part of the user. | ||
Setting | ||
The lead screw on the auger bit is extremely useful. It helps drill precise holes and pulls the drill through the workpiece, reducing the pressure that must be applied to the drill. However, in the wrong circumstances, it can interfere with drilling and can cut into the workpiece too aggressively, causing it to rotate or damage the drill. | ||
To avoid this, before you start drilling, make sure your drill is set to a low speed: 500-750 RPM (rpm) on a drill press, or the lowest gear on a variable speed drill. | ||
If you are going to use a drill on a drill press, use a drill with a gimlet instead of a lead screw if possible. Otherwise, make sure you clamp the workpiece so it doesn't spin like a propeller on the end of a drill! | ||
Make sure you choose a drill that is the correct diameter for your project and long enough to drill the correct depth. | ||
Drill a hole | ||
Step 1 - Fix the workpieceMake sure the workpiece is clamped in a vise or fixed on the table of the drill press. | ||
Step 2 - Align the drillAlign the center of the lead screw or the point of the gimlet with the point where you want to drill the hole. If you are using an auger drill, you will need to do this by eye (you will need to find the mark under the center point of the drill as best you can). For a description of auger drills, see: What are the parts of a drill bit? | ||
Step 3 - Activate the drillWhen the bit makes contact with the workpiece, activate the drill (or start turning if you are using a hand brace). The lead screw of your bit will enter the workpiece and the bit will begin the drilling process. | ||
Don't apply too much downward pressure. You don't need to lean on or press down on the chisel while drilling, as the chisel itself effectively drives through the workpiece. | ||
Step 4 - Output the bitAfter you have drilled the hole, reactivate the drill when you remove the drill from the hole. This will clear the span of any remaining wood chips as they are removed. |