Menards and other places rent core drills for large holes in concrete.
Making hole in concrete wall.
Drill through each corner of your cutout using a rotary hammer equipped with a masonry bit.
The size depends on the application.
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.
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.
These holes will mark the boundaries of the opening and help guide your cuts.
5 line up the blade of a.
Remove any concrete dust then press the anchor into the hole until it is flush with the surface.
If necessary tap.
Unless you want to buy a hilti dd100 and the bits which will cost you way more than hundreds.
Match the correct anchor size to that of the concrete screw.
Easiest way is to call diamond drilling or a similar company and have them come out and drill all your holes for a few hundred dollars.
The hole should be slightly smaller than the maximum width of the.
Sorry i just re read your post.
Here s a few pictures of the right tool.
A core drill is simply a drill bit used for making the large holes in concrete and masonry materials.
The guys at home depot had a lot of fun lamenting the fact that the hole existed to begin with and then suggested that i build a mold on one side of the wall and fill it in with a pour of concrete.
After hearing that i seriously considered just gluing a piece of plywood over it and calling it a day.