With the wet method, water is constantly needed to be applied to the concrete you are cutting. Secondly, slide the blade cover and make sure the blade is locked firm. 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. 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. The wet/dry cutting blades are actually diamond blades but the problem is that cutting concrete makes the blade extremely hot, and here comes these blades. Plugin the circular saw if you are using an electric saw. 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. With the diamond blade placed on the point marked out, pull the trigger of the circular saw to start cutting. 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. So to protect yourself from cuts, use a pair of really thick gloves. A 7” circular saw, for instance, can only cut to 2-¼ inches deep, meaning you’ll need to sledgehammer the rest of the concrete away; a 14” wet-cutting blade … This step is a deciding factor on the type of cutting result you will get after sawing. However, a circular saw that has a special blade is the best choice. If you’re using a wet saw and the chalk is washing off, use a crayon so the line will stay. Then take out the blade. Back the saw out after about 30 seconds to avoid overheating. The common concrete blocks are â4-inch, 8-inch, and 12-inchâ blocks. Fixing the serrated diamond blade is a tad different from regular blades. When attached with the correct blade, the saw is capable of cutting just about any material from steel to concrete. Set up workhorses or, preferably, a work stand with adjustable sides to secure the pavers. Take a tape measure and measure the length of the space where the cut cinder block will fit. To cut concrete with a 15-amp circular saw, start by using chalk to mark cut lines on the surface of the slab. The goggles protect your eyes from flying debris like little stones and dust while the mask prevents you from inhaling dust particles. Cut the block, allowing the saw and blade to do most of the work — don't apply too much force. This will keep the saw from scratching the concrete surface as you cut. Cutting cleanly through concrete blocks is not a task that can be executed with just any saw or power tool. Though the circular saw can cut through concrete blocks, this doesnât mean you can just pick up your circular saw, plug it in and start cutting concrete blocks. The circular saw has to be hands down one of the most aggressive power cutting tools ever made. 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. Concrete blocks are usually made with gravel and cement which make them hard. Make sure you have the right blade and that the blade is not dull to avoid kickback. Therefore, I advise you to wear a respirator or dust mask. Have a superb cutting experience. Saw … The scarifier doesn't really slice the way you think a traditional blade on a circular saw does. If your cut doesn’t need to be exact, use a cold chisel and hand sledge to cut the concrete. 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. If you are a contractor and doing many concrete cutting jobs, aim for the diamond blades. 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. 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. Marking out the area is like marking out the route the blade will follow. The dry cutting method: Dry cutting method involves using serrated or toothed diamond blades that can get rid of the sand particles while working. Though your eyes are protected, the debris can still hit any part of your face. For example: A masonry abrasive cutting blade is inexpensive, so they are affordable but the bad side is that the cutting speed is not good, you will take a longer time to cut your concrete block as well as they wear so quickly, and you have to replace it from time to time if you have a lot of jobs to do with it. This generates power for the circular saw. If you are using a battery-operated saw, remove the battery and switch off the saw. Why Should You Use Circular Saw To cut Concrete Blocks? Simply use your circular saw and diamond blade to cut completely through the block. Im doing jobs for other people during the day or looking after my son so its really just a temporary thing for my own building projects. 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. Put a strip of duct tape along the bottom of the saw body where it runs against the concrete. To install the blade, first, check that your saw is turned off and unplugged. You will need to move the saw blade back … Remove the screw and the washer. The teeth of the blade should be facing in the direction that you will be cutting. Small rough cuts can be made using a sledgehammer and cold chisel. Rather than setting your saw at a miter, leave it at 90 degrees and cut from the side of the blocks. Actually, the most important thing about cutting concrete is the blade, as we learned before in this guide that the blade is what really makes the cut, not the saw, meaning that if you have the best concrete saw in the world but have the wrong blade, you won’t cut anything and you will end up breaking the blade. There you go! Now turn on the circular saw and carefully bring it down on the outline and start cutting. 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. While you can find vacuum systems designed to collect the dust material, the systems aren't fully effective. Mark your cutting line onto the concrete using a 2-by-4 as a straightedge to guide the chalk. Best Corded Circular Saws: Which One Should You Pick? You need to plan your cut before practically engaging in it. 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. It can cut materials such as masonry, metal, plastic, and wood, and can be either mounted to a machine or hand-held. It can cut materials such as masonry, metal, plastic, and wood, and can be either mounted to a machine or hand-held. If you want to buy any other type, just make sure that the RPM is above 3000 just to increase the cutting speed. 8. When the dust becomes airborne, it's possible to inhale it into your lungs, which can create severe health problems. Place the shoe of the reciprocating saw against the cinder block with the blade directly above the cut-line. The concrete block varies in size and thickness. The best thing about this type is that it has a long life span but be careful, they produce high amounts of silica dust during the cut. Place the block down on a surface that will prevent it from vibrating and thus, moving. Before we get started, you should follow these tips: Wear all your protective gear. 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. Set the saw blade to cut ½-inch deep, and position the paver on a flat surface, such as the ground or a sturdy board set on top a couple of sawhorses. There are two methods that can be used when using a circular saw to cut concrete blocks. The rest of the blockwork can be quite quiet other than the block cutting. A circular saw with a masonry blade can also be used to either score or completely cut through the block. The type of circular saw doesn’t have a significant effect, but I prefer using the DEWALT DWC860W because it has a built-in water feeding system that will help you reduce the dust and prevent the overheating, and I’ve already tried it with the DEWALT DW4701 blade for cutting retaining wall 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. To be able to cut concrete with circular saw, the thickness must not exceed 15 cm max or things may become difficult. Modern circular saws have a âblade release switchâ that allows you to remove the blade. Inspect every part of the saw before and during the task. So, letâs get to it. Attach the blade and the washer, and then tighten the screws. Ensure you follow the steps and safety measures above and you will have a perfectly cut concrete brick when you are done with your task. Firstly, make sure your saw is unplugged. Step 4: If you are cutting with wet blade, then make sure you have someone helping you add a slow stream of water to the blade during the process to overcome the heating and prevent the dust. When you are done with the steps above, you should be proud of the cutting result. Operating circular saws aren’t difficult enough. Before we get started, you should follow these tips: Make sure the surface that you want to cut is clean. 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. Don’t force a blade into a cut. 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. Cut curves in the saw firmly in place better than the masonry abrasive ones and doing many concrete jobs... 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