- Use a strong cordless drill machine.
- Set the machine to the highest position.
- Bring the drill to the drill guide at the correct angle.
- Lean lightly into the drill guide with the tip of the core drill.
- Do not yet touch the wood with the teeth of the core drill.
- Start the drill in the highest position without touching the wood.
- Continue to lean into the guide and carefully advance the drill until it touches the wood.
- Do not drill more than 2-3 cm and pull the drill back a centimeter to unload the dust.
- Drill another 2-3 cm into the wood and retrieve the drill to unload.
- Never pull back so far for the front of the drill to reach the sapwood (oak).
- If you drill more than 2-3 cm, the drill can’t get rid of the dust and drilling becomes heavier.
- If drilling does become more difficult, shift the machine to a lower gear.
- Drill like this 2-3 cm at a time until you get deep enough.
- Remove the running drill from the wood in one smooth motion.
Some extra thoughts:
- Keep leaning lightly into the guide throughout the process, including when removing.
- Allow the drill to run through the whole process uninterrupted.
- Never remove the drill completely from the wood during the proces.
- Clamp the drill in your hands and tense your arm muscles.
- The drill is more likely to jam if you don’t hold the drill firmly.
- Hold the handle but put your wrist over the battery for better control of the drill.
- If the drill still jams during work, despite you are doing the unloading well and holding the drill firmly, you should use a brace or even reduce the speed.
