With the tool attached, identify where you want to drill. This is another top choice for those who need to make a bigger hole of 4 inches into their concrete wall. Bosch HC8510 2-inch SDS Max Rotary Hammer Core Bit, 2. You can keep an air can around to help with removing any debris that might be remaining in the hole. Start by attaching the core drill bit to your drill power tool. Draw a straight line across the block's surface at the measurement marks with a pencil, using a carpenter's square as a… Cinder block isn't as dense as masonry, though -- and it may be hollow, if it isn't filled with concrete -- so it usually doesn't take long to make a hole in it. Here's a few pictures of the right tool. Also, it might snap the diamond teeth of the core drill. Do not use a drill with hammer action for core drilling. Coming from Bosch, we expect this core drill to perform well. Any suggestions would be greatly appreciated as my husband is killing himself using this frame machine without the anchors. The depth of cut is 2 inches. Cutting through a block wall (but not the concrete footer) would typically run $300-500 additional over going through a studwall - more in the $500-1000 ballpark additional cost if having to cut … 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. The result is that you end up with clean and accurate holes. Now that you know what a core drill is all about and the possible options in the market, let us get down to how to use one for drilling in concrete. Store Finder; ... Material Cut. I only watched, so I don't know the finer details, but I thought people would appreciate just seeing the tool. I then used the bit to cut another hole is a different block wall and ran into some concrete wire in the mortar joint, again the bit didn't seem to care and just cut through and out the other side. How to drill a 4 inch hole in concrete Answered 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. It is just like using any other type of drill bit to drill a hole into a wall. Measure and mark a line where you are going to cut the cinder block. The core drilling process needs to be smooth so the jerky action of a hammer will make it hard to achieve a smooth hole. Drill the 3/4 inch pilot hole inside but near the circle's line. With the guide bit removed, you can proceed to drill into the concrete wall up to the desired depth. You will find most core drill bits coming in different sizes such as 2 inches or 4 inches. Get free shipping on qualified 1-1/2" Hole Saws or Buy Online Pick Up in Store today in the Tools Department. Some might even have power running through them leading to more possible dangers. Masonry/Block. The hole should be slightly smaller than the maximum width of the anchor. It is designed to be perfect for concrete drilling and work with other cutting accessories to get the job done. Tile (wet or dry) Wood ... EDiamondTools 1-1/2 in. When you purchase through links on our site, we may earn an affiliate commission. You can always get more models depending on the size of the hole you would like to achieve. The company hiring you the tools from might also have classes where they teach you how to use the tools. Most people drilling large holes love it for being an all-in-one design. Trace a duct end onto the blocks where you want the hole: it is best that the edges of the hole be at least an inch (3 cm) away from cinder block edges and mortar but can go through them. Where did you purchase/rent the saw you used? 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