The walls at our new place are 6 inch thick concrete it s an old naval base and we needed a few holes for vents.
How to drill 4 hole in concrete wall.
The drill bits can also make or break your project.
When you have to drill large holes into concrete such as the 2 inch or 4 inch holes you will need to use a core drill.
There are numerous types of drill bits designed for use with concrete but the key is.
Drill the guide hole to a depth of 1 8 to inch.
As much as you will be using the core drill a standard drill is still required in the initial stages to make the guide hole before you can fully switch to a core drill.
Drill forward with steady light pressure.
I ve hammer drilled through concrete to sink anchors but a 4 inch diameter hole is a little intimidating until you have the right tool.
Here s a few pictures of the right tool.
A standard drill bit is not large enough to make such a hole.
However if your wall is brick stone or concrete you ll need a masonry bit.
Before you drill a hole in the wall make sure you have the correct drill bit for your wall.
While you might be able to get away drilling into a concrete wall with a regular drill you can t get away with using a standard drill bit.
It s not only the drill you use that makes a difference when making a hole in concrete.
Do not force the drill.
Position the tip of the drill on the mark you made on the concrete and keep the drill perpendicular as you drill.
You ll need a drywall bit for a sheetrock or plasterboard wall which most household walls are made of.
Whatever you do don t use regular drill bits for concrete.