How To Drill A 4 Inch Hole In Concrete Wall

Step 4 when you start with a guide hole at least 1 8 inch deep your drill will be easier to control but all the same continue to operate the drill with a steady light but firm touch so you re.

How to drill a 4 inch hole in concrete wall.

I need to drill a 4 hole in the foundation of our house to vent a bath fan in the basement. Drill the guide hole to a depth of 1 8 to inch. Stop the drill sweep or blow away the accumulated concrete dust and pull out the drill. 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.

Thicker points are reinforced with re bar. Blow away dust that accumulated in the guide hole. We will discuss the process later in this. Drill forward with steady light pressure.

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. Do not force the drill. Next turn on the drill s hammer function and start drilling applying firm but not forceful pressure. A standard drill bit is not large enough to make such a hole.

Once you have the right drill and drill bit mark the spot on the concrete you want to drill through. 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. The wall is made with stay in place forms so the actual concrete forms a kind of waffle pattern which i think is about 4 thick at its thinnest point.