Before we get started, you should follow these tips: Wear all your protective gear. How to cut concrete blocks with a circular saw? However, certain building needs require different sizes and make of blocks. You will enjoy reading them. Then take out the blade. If the blade can saw through concrete, think of what it could do to your fingers. How to cut concrete blocks with circular saw? If you are making use of a smooth diamond blade, remember to use a saw that can apply water on the surface, or gently pour water as you are cutting. It will provide a perfect cut but is very dusty, so be prepared for a bit of cleanup and the need for wearing face dust masks. While you can find vacuum systems designed to collect the dust material, the systems aren't fully effective. Therefore, I advise you to wear a respirator or dust mask. Contrary to the dry blades, wet blades always must have water added to it during the cutting process. With regular circular saw blades, you fix the blade in the saw with the teeth angled upwards. If you’re using cinder blocks to build a wall or patio space, cutting cinder blocks to a precise size will ensure they fit perfectly. Diamond rim masonry blades can cut concrete block when used on a circular saw. Set the saw blade so it will cut about 1/4 inch to 1/2 inch deep. The concrete block varies in size and thickness. It’s advised to take a break from cutting for a few seconds, especially if you are working on a large block like the 12-inch concrete block. Depending on the thickness of the concrete, you may have to raise the blade and cut through only a portion of the paver. Be sure of the places you want to cut and mark the concrete blocks with the chalk line. the dry cutting blades are specially designed so they expel the heat quickly by making segmented teeth on the blade. Remove the screw and the washer. To cut concrete with a 15-amp circular saw, start by using chalk to mark cut lines on the surface of the slab. If yours doesn’t have the switch, use a wrench to loosen the bolt holding the blade in place. So to protect yourself from cuts, use a pair of really thick gloves. The water eliminates the problem of dust particles and also cools the blade while working. Cut the block, allowing the saw and blade to do most of the work — don't apply too much force. Cut in several steps, say 3/4 to 1" at a time. Next, set the saw's blade depth to 2 inches and attach a 7 inch diamond blade using vice grips so that the teeth point in the opposite direction of movement. Step 1: Mark off the cutting path with the chalk line. He used to own a local shop where he sold different tools for 20+ years. All you have to do is mark out the curve on the block and follow the curved line. An abrasive corundum masonry blade or a diamond blade are needed to cut concrete with a circular saw effectively and safely. Secondly, slide the blade cover and make sure the blade is locked firm. 8. If you are using a battery-operated saw, remove the battery and switch off the saw. The scarifier doesn't really slice the way you think a traditional blade on a circular saw does. Though your eyes are protected, the debris can still hit any part of your face. If you have a blade in the circular saw, you need to remove it, so you can attach the diamond blade. This isn’t as hard as it sounds. Cutting concrete blocks can be done a few different ways. It can cut materials such as masonry, metal, plastic, and wood, and can be either mounted to a machine or hand-held. For a larger project or more accurate cuts, a circular saw with a concrete blade is a good option. Tips to get the best cutting results when using a circular saw to cut through concrete, Safety measures to follow when using a circular saw to cut concrete blocks. There are several types of blades; each has its own use. Mark the cut and clamp the stone or paver to a stable work surface. So now that we know we can cut concrete with a circular saw lets dig into some other aspects of what goes into cutting concrete with a circular saw. Now turn on the circular saw and carefully bring it down on the outline and start cutting. When you are done with the steps above, you should be proud of the cutting result. So, let’s get to it. Inspect every part of the saw before and during the task. Tip 2: Cut Concrete with the Right Diamond BladeFor maximum cutting speed and blade life, you should match the blade as closely as possible to the material you're cutting. When cutting through concrete blocks, there is usually a large amount of dust and sand that is sawed out. Use both hands to hold and support the saw firmly in place while cutting, Mark out the line you want to cut through with chalk or sharp rod, Ensure the diamond blade is properly fixed in the saw before you begin cutting, Take breaks. These dust particles can affect the blade you are using and also the result you will get when you complete the task. To fix in the diamond blade, slide the blade cover backward. To be able to cut concrete with circular saw, the thickness must not exceed 15 cm max or things may become difficult. Put on your safety gear; Remove the old blade Attach the diamond blade; Mark out the line you want to cut; Power-up your circular saw; Place the blade of the saw on the concrete block; Start cutting A concrete block is a rectangular block used in construction. Concrete blocks are usually made with gravel and cement which make them hard. It can cut materials such as masonry, metal, plastic, and wood, and can be either mounted to a machine or hand-held. In fact, there are specific saws that are designed for concrete cutting which are called “concrete saws” but they’re a little bit pricey, but circular saw are efficient and can do it flawlessly. The common concrete blocks are “4-inch, 8-inch, and 12-inch” blocks. However, if you need to cut concrete blocks constantly, it would be convenient for you to buy or rent a concrete saw. Turn on the circular saw's motor, and lower the saw's blade gradually onto one edge of the chalk or pencil line on the paver's upward-facing side. The goggles protect your eyes from flying debris like little stones and dust while the mask prevents you from inhaling dust particles. Before you move on to the cutting procedure, drip the concrete block into the water so that dust will reduce and also make the cutting easy. Simply use your circular saw and diamond blade to cut completely through the block. Quick Guide on How to Make Wood Molding with a Router, A Complete Guide on How to Use a Compound Miter Saw, How to Cut Plexiglass With a Circular Saw, A Complete Comparison: Sliding Miter Saw VS Compound Miter Saw, How to use a circular saw to cut straight, Best Miter Saw for Crown Molding for 2020 – Top Picks & Reviews, Best Benchtop Router Table for 2020 – Top Picks & Reviews, Best Router Bits for Cabinet Doors for 2020 – Top Picks & Reviews, How you can cut concrete with the circular saw, To be able to cut concrete with circular saw, the thickness must not exceed 15 cm max or things may become difficult.Â. When attached with the correct blade, the saw is capable of cutting just about any material from steel to concrete. It has a blade that can usually cut 1/4" or so deep up to several feet wide of concrete per pass. With all the basic and innovative techniques, this was all about the Circular Saws and how to cut concrete blocks with Circular Saw. If your cut doesn’t need to be exact, use a cold chisel and hand sledge to cut the concrete. With the diamond blade placed on the point marked out, pull the trigger of the circular saw to start cutting. To install the blade, first, check that your saw is turned off and unplugged. 3 Best Heat Guns For Cell Phone Repair: Fix Your Phone Using Heat Guns, Best Cordless Sanders: Work Outside Without Any Problem, Best Sander For Metal Working – Reviews & Buyers Guide, Best HVLP Spray Gun for Woodworking 2020 – Chosen by a Professional Painter, Best Detail Sanders – Find Sanders For Tight Corners & Small Areas, 5 Best HVAC Tool Belt 2020 – Find The One That Fits Your Needs. Don’t bring your face close to the surface area while sawing if you are using the dry cutting method. Cutting concrete blocks is a daunting task because of the materials that were put together to make the block. If you want to cut in reinforced concrete, do not do it by yourself because of two reasons: You will encounter rebar and things may not be good with you, you will need a professional. Attach the blade and the washer, and then tighten the screws. This will keep the saw from scratching the concrete surface as you cut. Your safety is vital when using any tool. Push the blade of the saw to and from while cutting to ensure the blade cuts evenly. A circular saw with a masonry blade can also be used to either score or completely cut through the block. Why Should You Use Circular Saw To cut Concrete Blocks? Diamond blades are more expensive; they do not wear easily and stay for a longer time, and if you are a contractor who always deals with concrete cutting jobs, diamond blades will be the prefect tool for you. Best Table Saw Fences: 5 Different Models Reviewed, Best Cordless Bandsaws: Take Your Tool Everywhere With You, 5 Best Cordless Jigsaw: Detailed Review And FAQ’s, 5 Best 14-inch Bandsaws: Detailed Review & Buying Guide. The wet cutting method: This method requires using a smooth diamond blade. Cutting concrete with a circular saw requires care, precision, and the right tools. An angle grinder equipped with a concrete-cutting blade makes straight sharp-edged cuts in a concrete block's surface. Make a series of passes until you have cut through the concrete block. Each material has an indicated type of blade which you can find in the hardware store or online. After choosing the proper blade, install the blade on the saw. Cutting cleanly through concrete blocks is not a task that can be executed with just any saw or power tool. You can’t remove a blade if it is spinning around as you try to unscrew it. Put a strip of duct tape along the bottom of the saw body where it runs against the concrete. Step 4 Cut around the entire block with the saw, then adjust it so it will cut 1/4 inch to 1/2 inch deeper into the block. When you have completed the steps above, place the diamond blade on the marked point of the concrete block. This step is a deciding factor on the type of cutting result you will get after sawing. The following is a list of the most common concrete-cutting chores – ranging from small to enormous – and the best techniques and tools for handling these tasks. With the wet method, water is constantly needed to be applied to the concrete you are cutting. The easiest would be with a circular saw and a masonry cutting blade. If you are cutting because you need both sides of the concrete block, then hitting it will not be your best bet. Don’t force a blade into a cut. If you’re using a wet saw and the chalk is washing off, use a crayon so the line will stay. Best Spray Guns For Plasti Dip – Give Your Car A New Look! It also depends on the type of concrete that you want to cut whether it is a hollow core block or reinforced concrete blocks. 7. Also, check out other articles and posts on this website. Measure the area where you’ll install the cut cinder block. This step depends largely on your purpose for cutting. The circular saw however is one tool that can cleanly cut through concrete easily, leaving you with desired and accurate results. Methods of Using a Circular Saw to Cut Concrete Blocks. Plugin the circular saw if you are using an electric saw. Reinforced concrete is a structural element in your building, so be careful when dealing with it, because cutting the rebar inside the RC may cause cracks in other parts of the RC. For cutting masonry blocks with a circular saw, the most important thing is using an appropriately sized diamond blade. Tools Needed: The dry cutting method: Dry cutting method involves using serrated or toothed diamond blades that can get rid of the sand particles while working. Marking out the area is like marking out the route the blade will follow. Step 5 Lower the end of the blade to the cut-line, keeping the shoe of the saw against the cinder block. Make sure you have the right blade and that the blade is not dull to avoid kickback. The circular saw has to be hands down one of the most aggressive power cutting tools ever made. The wet cutting blades are on the top, but you must add a low stream of water during the cut, this will lubricate the blade during the cutting process and also it will prevent the silica dust from being produced. You need a diamond cutting blade with your circular saw to accurately cut clean through the block without damaging it. The blade can be made from many materials, but in our case, we will focus on three types designed specifically for our job: They are all can be used in cutting concrete, but each one has its own advantages and disadvantages. Press down on your saw’s arbor-lock to open and place the blade. Cutting concrete with a power saw produces enormous amounts of dust. I had a sidewalk that was raised above a driveway and I knocked about a 45 degree angle into the corner of the side walk block to match the driveway. Place the blade of the saw on the concrete block. You need to plan your cut before practically engaging in it. Take a tape measure and measure the length of the space where the cut cinder block will fit. Try using a concrete saw. Place the shoe of the reciprocating saw against the cinder block with the blade directly above the cut-line. Score the length of the cut three or four times with the chisel. Step 3: Start the cutting slowly and don’t force the blade or the circular saw, just let the machine do the cutting by itself and you do the feeding slowly. If you want to buy any other type, just make sure that the RPM is above 3000 just to increase the cutting speed. There you go! Characteristics of the concrete you need to know include the compressive strength, the size and … With the variety of the circular saw models and being versatile enough, these saws offer you with the corded and cordless functions and features. Type of circular saw is used for cutting concrete? Each method comes with a type of diamond blade that suits it. A circular saw would be a power tool that uses an abrasive or a toothed disc to cut various materials by utilizing the motion spinning around its arbor. Here, we are dealing with the strongest material on earth, the diamond. Rather than setting your saw at a miter, leave it at 90 degrees and cut from the side of the blocks. Modern circular saws have a “blade release switch” that allows you to remove the blade. This will not allow you to cut well. Firstly, make sure your saw is unplugged. Luckily, this article will highlight the easy steps, tips, and tools needed to effectively cut through concrete blocks in seconds. Tape the saw to prevent scratches. When the dust becomes airborne, it's possible to inhale it into your lungs, which can create severe health problems. With the diamond blade, the teeth are usually angled downwards like the shape of a comma (the punctuation mark). The reason a diamond blade is advised for cutting concrete is that it is capable of ripping through the hardest of materials. Mark your cutting line onto the concrete using a 2-by-4 as a straightedge to guide the chalk. Step 5: Do not make a continues cut, stop the blade every 45 seconds and do it again. This video shows you exactly what it looks like to use wet cutting blades: If you are doing a quick job, then aim for the masonry abrasive blade. © PowerSawExpert.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. If you want to cut some concrete blocks, cut a wall or slab or whatever you want, then you need to do it the right way.  for cutting retaining wall blocks. Concrete is a mix of sand, gravel, cement and water, and it is everywhere. What are the tools required for cutting concrete blocks? Only buy the wet cutting blades if you have a specific concrete saw or a circular saw with special parts to add water stream to the cut during the process. Length of the concrete you are done with the chalk is washing off, use a pair of thick. Easily, leaving you with desired and accurate results '' or so deep up to several feet of! 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