The size of drill bit you need will depend on the size of the screw you want to insert.
A good rule of thumb is to select a drill bit that is slightly smaller than the width of the screw’s thread. This way, the drill bit will remove enough material to prevent splitting but will leave enough for the screw’s threads to bite into when its driven in.
You can check the sizes by holding the drill bit in front of the screw, and checking that the screw’s shank is no thicker.
Please note: Cordless screwdrivers all have hexagonal chucks, so ensure you select a drill bit with a hexagonal shank.
Selecting drill mode
A cordless screwdriver that has multiple torque settings, may have a drill symbol on the adjustable torque ring. This indicates that it is capable of drilling holes.
Selecting the drill symbol on the torque ring automatically means that the cordless screwdriver will deliver the highest level of torque it can, in order to turn the drill bit.
Step 1 – Release trigger
Release the speed control trigger and allow the cordless screwdriver to come to a complete stop.
Step 2 – Insert drill bit
If there is a bit already in the chuck, remove it, and insert the correct drill bit.
Step 3 – Adjust torque ring
Adjust the torque control ring until the arrow is aligned with the drill symbol.
Now you are ready to drill your hole.
Drilling the pilot hole
Please note: The diameter and depth of the holes you can drill will depend on how powerful the cordless screwdriver is.
Step 1 – Squeeze trigger
When you are ready to begin, gently squeeze the trigger and apply light pressure to the cordless screwdriver in order to begin drilling your hole.
Step 2 – Speed things up
Once the drill bit penetrates the material, you can apply more pressure to the trigger in order to drill at a faster speed.