How to drill large holes with thin drill bits

If you need to drill a hole of a large diameter and do not have the required drill, you can use several thin ones. The method works in wood, aerated concrete and other relatively soft or loose materials.

What you will need:

• 3 thin drills;
  
• electrical tape or tape;
  
• drill.

Drilling process with thin drills

Available thin drills must be folded into a bundle so that their combined diameter is approximately equal to the required one. They are wound together with electrical tape or tape.

A bundle of drills is clamped in a drill chuck, and drilling is performed with their help.

The resulting hole diameter may differ slightly from the required one, but if it is needed for a bolt and not a dowel, then this is not a problem.

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