Cordless drill/driver: setting it up and changing the bit or blade

Learn to set up a cordless drill/driver, change bits safely, and get the clutch right.

CD-01Learn the main partsThe chuck is the round metal part at the front that grips the bit - on most cordless drills it opens and closes by hand, no key needed. Just behind it is the clutch collar, a ring marked with numbers and a drill-bit symbol, which controls how much force the tool uses before it stops turning. Above the trigger is a small forward/reverse slider, and the battery clips into the bottom of the handle.

CD-02Fit the battery safelySlide the battery into the base of the handle until it clicks into place. Give the trigger a brief squeeze to check the drill powers up. Always remove the battery before you touch or change the bit - beginners often skip this, and a trigger nudged by accident can spin the bit while your fingers are near it.

CD-03Open the chuck and insert a bitWith the battery out, hold the chuck's front collar and twist it anticlockwise to open the jaws inside. Push the bit in as far as it will go - not just until it looks in - then twist the collar clockwise by hand until it's tight. A common mistake is stopping too soon: a bit that isn't pushed fully home will wobble or drop out mid-job.

CD-04Set the clutch for the jobTurn the clutch collar to a low number for small screws in soft wood, and a higher number for bigger screws or harder material. Turning it to the drill-bit symbol locks the clutch fully so the tool won't slip - use this only for drilling holes, not driving screws. If the number is too low, the clutch will click and stop before the screw is properly seated; if it's too high, you risk overdriving and stripping the screw head or the wood.

CD-05Choose direction and modeThe forward/reverse slider sets which way the chuck spins: forward to drive screws in or drill holes, reverse to back a screw out or free a jammed bit. If your drill has a separate drill/driver mode dial, use drill mode with drill bits and driver mode with screwdriver bits. Always check the slider is set to forward before you start driving - trying to drive on reverse just spins the screw back out.

CD-06Test drive a screw into scrap woodHold the drill square to a piece of scrap wood, not a wall, and start slowly, letting the screw bite before you speed up. Listen and feel for the clutch clicking as the screw seats - that's it doing its job, not a fault. If the screw stops proud of the surface, nudge the clutch up a number; if the head strips or sinks too far, nudge it down.

5 each · Wood screws (assorted)

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1 each · Scrap wood offcut

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CD-07Check you've got it rightGive the fitted bit a firm tug - it should not wobble or twist loose in the chuck. Drive a couple more test screws and check they stop at a consistent depth each time, flush with the surface, not sunk or proud. Confirm the reverse switch backs a screw out cleanly. If all three check out, your drill is set up correctly and ready to use.

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