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 cut a hole through concrete wall. 
									
	
		
	
																	Score the length of the cut three or four times with the chisel. 
																	Repeat step 1 on the other side of the opening. 
																	Learn how to cut into a basement floor the foundation of the house in order to do some plumbing for a bathtub. 
																	Use the right equipment. 
															
													
									
	
		
	
																	In this video you ll see the cutting using. 
																	How to make cutouts through a concrete wall. 
																	4 tips for drilling or cutting through concrete walls 1. 
																	If you are working with a concrete block foundation wall rather than solid concrete you may be able to use a carbide tipped core bit on a hammer drill to cut through the block walls. 
															
													
									
	
		
	
																	I then used a wood bit to drill a series of holes in the template closely spaced. 
																	Next get into position to drill by planting your feet firmly on. 
																	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. 
																	Double check your marks on both sides of the wall. 
															
													
									
	
		
	
																	If your cut doesn t need to be exact use a cold chisel and hand sledge to cut the concrete. 
																	Mark the wall where you plan to make your cuts using a tape measure to verify the exact location and dimensions for the new opening. 
																	If you are going to cut a hole or drill through a concrete wall use the right tools to. 
																	I have used long 1 2 inch rotary hammer drill bits to drill a series of holes and then a hammer and chisel to remove what s left. 
															
													
									
	
		
	
																	Don your goggles then insert the appropriate tungsten carbide masonry drill bit for your desired hole size into the hammer drill. 
																	I bolted the template to the concrete wall and hammer drilled each hole. 
																	Layout all of your cuts. 
																	A circular saw with a masonry blade can also be used to either score or completely cut through the block.