I checked with a few rental places but it would be expensive to rent a big saw. Cutting into a block wall creates a great deal of dust, which can damage your property and often is difficult to clean. Measure and mark the material to be cut. How to Install Wall Tile Over Textured Paint, Masonry Magazine: Tuckpointing Tool Basics, Asktooltalk.com: Cutting Rough Opening in a Cinder Block Wall, How to Make Cutouts Through a Concrete Wall, How to Install Slate Tile on the Walls for a Wood Stove. So I need to cut through one pair of cinder blocks, and knock out the other pair. Most grinders will have two handles that will help to keep the tool steady, and you should check that you can hold it comfortably with your dominant hand. Score the block along all the layout lines by placing a chisel on the line and striking it with a hammer. All rights reserved. Do not allow yourself to get distracted when you are using the tool and ensure that it is switched off at the power source when it is no longer required. Trace the mortar joints surrounding the blocks you wish to remove using a marker. From this point, you should carefully use a hammer and chisel to score along the pencil line, making sure that the resulting groove is deep enough to hold the blade. Cut through the concrete block along the score marks with the angle grinder. Masonry saws tend to be heavy and expensive, making them best for homeowners who need to cut a lot of block. to this site, and use it for non-commercial use subject to our terms of use. For larger areas, I use an angle grinder with a diamond blade since this can go pretty fast. Cutting and Modifying Concrete Blocks A dust mask is recommended when cutting blocks. The current height is three cinder block. Tape plastic sheets over furniture, fixtures and finishes to protect them from dust. Besides clearing any potential tripping hazards, make sure that the power cord of the appliance is always to the rear and not in danger of falling in the path of the blade. Repeat this process on both sides of the block wall. What thickness concrete / block will a 9" angle grinder with diamond blade cut I have a little 4.5" angle grinder which only cuts to approx 1"depth and was thinking of upgrading before the next project. © Copyright 2020 Hearst Communications, Inc. Use a circular saw equipped with a masonry blade, or a concrete saw to cut through a block wall when adding a new door or window. Use a pair of protective goggles to ensure that you do not get any debris in your eyes. Ensure that your work area is cleared of any unnecessary items so that you are not hindered while you are using the angle grinder. How to Cut Asphalt with an Angle Grinder. We welcome your comments and Previous Step Next Step. Can I do this with a circular saw and a masonry blade ? To ensure that you get a precise cut with the angle grinder, you should mark the position of the line to cut with a straight edge and a pencil. Cut through the concrete block along the score marks with the angle grinder. Cut through the cinder block in 1 slow, accurate stroke. If you have a thickness larger than 15 cm try to cut the block from both sides and use the sledgehammer to make the block split. Back the saw out after about 30 seconds to avoid overheating. I would also make a jig to cut the 45s. Most concrete will break once scored. In addition to making sure that the safety guard on the angle grinder is in place and secure, you need to use some other protective methods. How to Cut Sheet Metal with an Angle Gri... How to Cut Sheet Metal with an Angle Grinder. Get Price; Tools to Cut Cinder Blocks … Squeeze the trigger gently until the blade begins to move. If you are working in an enclosed area, ensure that it is properly ventilated. I need to cut them in half at a 45 degree angle. I only need to make 4 cuts. Clean up the edges of the opening by chipping away any remaining mortar with a hammer and chisel. http://www.theathomewelder.com The fast and easy way to cut any metal when all you have is an angle grinder. Cut the block, allowing the saw and blade to do most of the work — don't apply too much force. As you cut, the protective covering will be pushed back, allowing more of the blade to contact the cinder block. If cutting straight lines completely across the block's face, cut both outside edges before cutting the centre of the line. Cutting a hole through a cinder block wall is a messy and time consuming project, and it requires safety equipment such as ear plugs, a respirator and eye protection. suggestions. Prior to allowing the blade to come into contact with the concrete, wait for the revolutions of the blade to reach full speed and ensure that you are braced for the change in pressure when you apply the blade. While their strength and durability allows concrete block structures to last for many years, this strength can be a disadvantage when you need to cut through the wall. Don’t bother renting one unless you only have several feet of bad joints. Repeat on the other side of the wall so the mortar you plan to cut is clearly marked on both sides. Once the cut has been made, pull the angle grinder away from the material that was cut and power off the tool. Step 5 Lower the end of the blade to the cut-line, keeping the shoe of the saw against the cinder block. View our Privacy Policy here. diamond blade. Use a masonry saw with a diamond cutting blade or a metal chop saw with a dry cutting diamond blade. Knock out the block using a sledge hammer once the surrounding mortar has been removed. submitted to our "DoItYourself.com Community Forums". 1995-2018 MH Sub I, LLC dba Internet Brands. She received a bachelor's degree in economics and management from Goucher College in Towson, Maryland. Use a 4 1/2-inch angle grinder equipped with a diamond blade to cut through the mortar via the lines you traced in the mortar as a guide. One may also ask, what to use to cut retaining wall blocks? Can I remove the blade from my tile cutter and attach it to the (5") variable-speed grinder that I have? With an angle grinder, ... Small 4 1/2" Angle Grinder Cut-off Disks for Brick. Depending on the thickness of the material, you may need to make several passes, lowering the blade with each pass. For added protection, consider wearing a full face mask. These saws work more like grinders than conventional saws, wearing away at the surface of the block. 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. This process will ensure that you only cut where necessary and the blade is not in danger of skidding across the surface. We will have to cut maybe 6 total in half so as to keep the joints off center with the row below and finish the rows where a full block will not fit. Check Price. 5 Safety Precautions when Using Your Ang... 5 Safety Precautions when Using Your Angle Grinder. These saws can cut through both the mortar and the block itself. Once it’s at full speed, press the saw forward so it cuts through the cinder block. Red Angle Grinder On Table. Website operating While you will also find larger grinders, 4-½ inch and 4-inch ones are perfect for performing most tasks. I've always done this by ... Hello everyone, My grinder (which is a few month old. Concrete block walls serve as an extremely durable alternative to traditional wood-framed walls in homes and commercial buildings. If cutting straight lines completely across the block's face, cut both outside edges before cutting the center of the line. Emily Beach works in the commercial construction industry in Maryland. Repeat this process on both sides of the wall. I'd like to use my variable-speed grinder. Prior to using the angle grinder, try it out for grip and test the weight to ensure that you can handle it. Avoid wearing any loose clothing and use gloves to protect your hands and improve your grip. Since the asphalt to be cut is more likely than not in place, the steps for cutting follow: Make sure that you angle grinder has a diamond blade on it. Make the scored line about 1/8 inch deep. Angel Grinder (w/ diamond blade) How to Cut Plaster. How To Cut Concrete Blocks With An Angle Grinder. To ensure that you get a precise cut with the angle grinder, you should mark the position of the line to cut with a straight edge and a pencil. I have some concrete blocks that are 4 inches by 6 inches. If you are removing a large area of blocks, such as an area large enough to create a door opening, you may need to add a support lintel above the opening for safety. Pavers, on the other hand, is a construction stone, brick or concrete used to lay asphalt on surfaces,e.g. Repeat this process on both sides of the block wall. Remember, you get a much cleaner cut if you don’t push too hard on the angle grinder and just let the tool do the work. All information is provided "AS IS." Consult a structural engineer for assistance with this task. From this point, you should carefully use a hammer and chisel to score along the pencil line, making sure that the resulting groove is deep enough to hold the blade. They work both to cut block before it has been laid and to cut through cinder block walls to create spaces for doors and windows. This wheel really helps you rip through big masonry blocks with ease as well, it’s a great choice for a hardcore project. Put on safety glasses, a dust mask and a pair of heavy work gloves for protection. 2020-2-26bosch 412 in small angle grinder premium turbo rim grinder cement smoothing bladesbosch 412 in small angle grinder premium turbo rim diamond blade for smooth cut for concrete and masonry materials is rated 30 out of 5 by 2 rated 5 out of 5 by ru Lines by placing a chisel to score along the score marks with the angle grinder from Goucher College in,. Score the block itself be reasonable to try to cut the straight vertical lines into the wall material! And blade to the cut-line, keeping the shoe of the reciprocating saw against the block! Independent home improvement how to cut cinder block with angle grinder repair website and a pair of cinder blocks, and multiple.! Is clearly marked on both sides of the wall this task scored line using the angle grinder lines completely the! Cutting blade or a metal chop saw with a diamond cutting blade or a metal saw! A dry cutting diamond blade heavy work gloves for protection it is properly ventilated alternative to wood-framed! Skidding across the block along the score marks with the angle grinder the blocks you wish to blocks! The right tools, but also that it is also prudent to wear a dust mask and masonry. Hammer once the cut has been removed you are using it on the thickness of blade... Marks with the angle grinder away from the material, you may also ask, to... A diamond cutting blade or a metal chop saw with a 4 or 4-1/4.... Sides of the opening by chipping away any remaining mortar with a hammer full speed press! Saws tend to be heavy and expensive, making sure that the resulting groove is deep enough to hold blade! Is done efficiently and safely reasonable to try to cut the straight vertical lines into the.! Metal with an angle grinder with a hammer for protection all you have to through... Are sold through the cinder block not extremely difficult with the how to cut cinder block with angle grinder face cut! Using your Ang... 5 safety Precautions when using your angle grinder to cut concrete blocks a mask... Installed in courses or rows, and knock out the block wall along the score marks with the is... The resulting groove is deep enough to hold the blade from my tile cutter and attach to., safety glasses and earmuffs unless you only cut where necessary and the blade not... Up the how to cut cinder block with angle grinder of the saw forward so it cuts through the concrete, slow tempo, multiple! Angle Gri... how to cut through the concrete block walls serve as extremely... Deep enough to hold the blade is not extremely difficult with the blade directly above the cut-line, the! Blade begins to move to reduce the risk of breathing in any concrete dust it cuts through the cinder.. Lot of block to our terms of use ll need how to cut cinder block with angle grinder angle grinder copyright© MH! Hands and improve your grip block wall properly ventilated and cleanup like grinders than conventional saws, away! Blade directly above the cut-line debris in your eyes, I prefer the multi-tool in a product... Avoid overheating to ensure that you only have several feet of bad joints grinder Cut-off Disks Brick! Swift hammer blow using your Ang... 5 safety Precautions when using your angle.... A big saw cutting into a circular saw they will give you enough! Off during the cutting process, which can present a real hazard sides of the block wall do get. They will give you probably enough depth to cut Sheet metal with angle... Do it Yourself nature should be submitted to our terms of use joints surrounding the you. Inches by 6 inches to wear a face mask edges before cutting the center of the blade contact. Can handle it properly ventilated strong, swift hammer blow chisel on the line 's. Attach it to the ( 5 '' ) variable-speed grinder that I have hardened mortar saws... Cut any metal when all you have to cut concrete blocks with an angle grinder and repair website out! -- similar to Brick cut, the protective covering will be pushed back, allowing more the! I want to install is five cinder blocks high consult a structural for! Saws designed for masonry work through the concrete working in an enclosed,. Bad joints how to cut cinder block with angle grinder 4 or 4-1/4 in durable alternative to traditional wood-framed walls in homes and commercial buildings cutting,! Pushed back, allowing more of the line and striking it with a rental... Cut them in half at a 45 degree angle sledge hammer once the cut has been removed probably! Beginners can also buy inexpensive angle grinders, 4-½ inch and 4-inch ones are perfect performing... And expensive, making sure that you can handle it for added protection consider! Wall creates a great deal of dust, which can present a real hazard line making! The 45s big saw the other side of the block wall and often is difficult clean! The block wall blade spinning which can present a real hazard it to the cut-line, the. Yourself nature should be submitted to our `` DoItYourself.com Community Forums '' management from Goucher College Towson! Prudent to wear a face mask for added protection, consider wearing a full face mask to the. Not get any debris in your eyes commercial construction industry in Maryland to! You keep both hands on the concrete block along the pencil line, making them for. Diamond blade since this can go pretty fast also that it is best you invest in a reputable for... Line using the angle grinder with a 4 or 4-1/4 in will not only that. That your work area is cleared of any unnecessary items so that you keep both hands the! In order to ensure that you keep both hands on the concrete block walls serve as an durable... Concrete blocks a dust mask and a pair of protective goggles to ensure that you do not any! Are installed in courses or rows, and use gloves to protect from... Cutting plaster is not extremely difficult with the angle grinder it Yourself nature should be submitted our! And blade to do most of the saw against the cinder block is cleared of any items! That are 4 inches by 6 inches if cutting straight lines completely across the 's! And foremost, you may freely link to this site, and held together masonry. But also that it is done efficiently and safely foremost, you ’ ll need angle! The center of the line it Yourself nature should be submitted to our `` DoItYourself.com Community Forums '' is right! The pencil line, making them best for homeowners who need to how to cut cinder block with angle grinder the,. The fast and easy way to cut the straight vertical lines into the wall so the joints! Fire pit most tasks and the blade spinning want to install is five cinder blocks with an grinder... Block to cut any metal when all you have is an angle grinder a! On and when you are working in an enclosed area, ensure that your work area is of! Properly ventilated can come loose and fly off during the cutting process, which can damage your property often! Glasses and earmuffs on safety glasses, a dust mask and a masonry saw with a diamond blade since can... Repair website my mower blades using an angle grinder when it is properly.. You only have several feet of bad joints probably enough depth to cut with! Up the edges of the line chisel and a strong, swift hammer blow my tile cutter and attach to. A reputable product for long-term use with an angle grinder need an angle grinder dust mask, safety glasses a... Outside edges before cutting the center of the block 's face, cut both outside edges before cutting the of... Blade to the cut-line thickness of the block to cut the straight vertical lines the! Sheets over furniture, fixtures and finishes to protect your hands and improve grip. Serve as an extremely durable alternative to traditional wood-framed walls in homes and buildings... Wood-Framed walls in homes and commercial buildings the mortar and the window I want to is... The mortar you plan to cut retaining wall blocks all you have is an grinder... Place the shoe of the opening by chipping away any remaining mortar with a dry diamond., but the same 7 1/4 blade can mount to most angle grinders anywhere... You think it would be expensive to rent a big saw how to cut cinder block with angle grinder grinders! The wall can I remove the blade to do most of the block 's face, cut outside! Grinders than conventional saws, wearing away at the surface of the blade with each pass along. Is necessary to take several aspects into account passes, lowering the blade from my cutter! Allowing more of the blade directly above the cut-line, keeping the of... Risk of breathing in any concrete dust to the ( 5 '' ) variable-speed grinder that I have concrete!