Before opening the guard make sure the machine is isolated from electricity (so it doesn't accidentally turn on)
Open the guard and check that there is nothing already in the chuck.
Collect your chuck key and drill bit.
Using your hand, open the chuck (by twisting) until you can place the drill bit between the 3 jaws. Now tighten the jaws around the drill bit.
Use the chuck key to tighten the chuck even more. Make sure you remove the chuck key and close the guard before turning on the machine.
Now you are ready to check if the drill bit is straight.
- A pillar drill
- A drill bit
- A chuck key
London, United Kingdom