Angle Grinder Safety: 7 Tips to Prevent Accidents

Published on: January 7, 2022
Written by Eric Devin / Fact-checked by David Rowan

Angle grinder is the most potential cutting device compared to many other saws. It’s a hand-held power tool assembled with an abrasive metal cutting disc that offers a wide range of cutting and polishing of materials including metal, bolts, angle iron, rebar, concrete, sheet metal, and other robust materials, etc.

angle grinder safety

This brilliant device is commonly used in metal workshops, construction sites, and hardware shops. One of the unique features of this device is that it comes with various grinding wheels and other key attachments.   

Major Injuries

In spite of being a versatile tool, every year significant numbers of injuries occur from angle grinders due to the use of a defective machine, mishandling, use of the wrong wheel, flying rough metal particles, directly contacting the running machine, sudden ejection of machinery parts during operation, negligence about maintaining safety protocols, operation by unskilled operators, etc. revealed by different industrial safety studies and hospital reports across the world. Following is the list of major injuries:

angle grinder safety
  • Amputation;
  • Laceration;
  • Eye injury and vision loss;
  • Electrocution and burns; 
  • Long-term impact injury including permanent damage of organs; 
  • Post-injury trauma; 
  • Death;

However, keeping in mind the above causes of injuries, I have designed this article outlining angle grinder safety and 7 tips to prevent accidents to make operators aware of safety protocols and their strict adherence. 

1. Angle Grinder Safety Checks

Reading User’s Instruction Manuals

It’s obligatory to read the user’s manual thoroughly to learn about the machine, its configuration, operational procedures, maintenance, and associated risk factors, etc. to avoid potential injuries and hazards. You must be familiar with the important assembly of an angle grinder and its specifications including blades, wheel guard, handle, mounting hardware, flange, power assembly, spindle locks, etc. 

Knowledge Management

Training is compulsory for the safer and correct operation of any power tool. Train yourself on the required skill associated with the operation and maintenance of your device. Keep yourself updated with the latest information and technology in a timely manner, especially safety issues to avoid untoward situations including accidents. 

2. Wear Personal Protection Equipment (PPE)

Angle grinder moves at high speed up to 12000 rpm leading it to cut any contacted materials irrespective of the category of materials, even human organs which are not out of them. Always keep in mind that an angle grinder can only recognize materials for grinding and can’t distinguish human organs to avoid cuts. 

Read more: Finding the Perfect Class 3 Safety Vests

Organize and Wear PPE

Gather all your safety equipment including face shields, industrial goggles, helmets, boots, ear-gear, registered hand gloves, protective jackets, etc. as specified in the manufacturer’s manual. Before going to operate your machine, you must wear these essential safety gears to be protected from accidents and injuries. 

3. Organize Safety Compliant Setup

Preparing safety compliant setup is repeatedly triggered by the professionals to produce professional-grade performance and safety for the operators. Take care of all compliance issues to ensure a safer and more professional work environment as recommended by the manufacturers. 


Keep your workshop dry, clean, and well-ventilated. Don’t mess up the environment with excessive and unnecessary materials. 

Remove flammable items: 

Remove all flammable items including matches, fuels, liquids, etc.

Inspect Power Connection

Check out all power connections and make sure they all are in place. There should be no torn wire or any faulty accessories that may cause an electric short circuit and electrocution.   

Protection From Sparks

Keep your workspace protective against sparks or other associated risks from an angle grinder. Keep a fire extinguisher to manage fire hazards.  

4. Assemble Angle Grinder

Before carrying out operations, you must look at certain aspects to get your machine ready for operation. 

Assemble All Parts Properly

Make sure all parts are assembled properly as per the user’s guidelines. The materials going to be ground are properly placed and firmly clamped with the workbench.  

Place Safety Guard

Ensure the safety guard of the angle grinder is appropriately placed. 

Power Connection

Inspect the entire power connection and its placement so as to quickly handle any untoward situation if it arises to be protected from short circuits and electrocution.

5. Cautions During Operation

Follow Operational Procedure

Run your machine as per the manufacturer’s guidelines. Remember, accidents and injuries from negligence never compensate for the loss.   

Inspect the Disc

It’s mandatory to inspect if the disc runs properly. Ensure the disc spins at a clean axis and does not tremble.    

Hand’s Safety

Beware of your hand and keep them away from the grinding piece and rotating disc. Remember, your hand could be suddenly slashed by a high-speed rotating disc if they somehow contact the disc. Don’t forget that an angle grinder can’t recognize human organs to avoid cuts.  


Kickback is one of the violent reactions of power tools, and the angle grinder is not out of it, leading to serious injuries. Kickback occurs by pinching when the disc suddenly gets halted during the operation.  This causes a rebound effect between the grinder and the surface leading it to hurt the operator or bystanders. 

The use of faulty blades and running the grinder for too long at a time also triggers the potential risk of kickback leading them to overheat and wobble rapidly which also causes the potential risk of kickback.  

To prevent kickback, it’s strongly recommended to use a standardized disc and check the disc condition by running it for at least 30 seconds before operation. 

Cut the material straight at a 90-degree angle. Don’t force the disc into the grinder and avoid tilting close to the disc in order to prevent kickback injuries.      

Turn Off Grinder if Any Adjustment Required 

If you notice any abnormality and/or if the disc needs replacement, unplug your machine from the power source and then fix things in whatever is necessary. Before restarting, ensure the guard is in place. Else, you may receive an electric shock and get electrocuted or lacerated. Never tend to work with a defective machine or wrong attachment. 

6. Post-Operation Care

Don’t Leave the Guard in Operating Mode

One of the unsafe practices among the operators is that they often tend to leave the guard in operating mode after the work is done which often triggers accidents.  

Cleaning Safety

Unplug the grinder before cleaning the waste. Clean your grinder properly as per the user’s guidelines and store them in a dry place for reuse.

Inspect Assembles

After use, check out all parts including discs, blades, and guards are in good condition for further use. If needed, replace or repair them as per the manufacturer’s guidelines. Never tend to use defective tools. 

7. Maintenance

Every machine needs routine Maintenance. Routinely check out your machine, and set of detachable parts to ensure they all are in workable condition. If necessary, repair or replace them without any delay and consult the manufacturer for professional guidance. 

Always pay attention to the quality while purchasing a new set or replacing any parts. 

What Precautions Should I Take When Using an Angle Grinder on Wood?

When woodworking with angle grinder on wood, it is crucial to wear appropriate safety gear, including eye protection, gloves, and a dust mask. Make sure the wood is securely clamped down and avoid using excessive force. Keep a firm grip on the grinder and be mindful of kickback.

Should I Use an Angle Grinder to Sand Concrete, or is Hand Sanding Safer?

When it comes to sanding concrete by hand vs. using an angle grinder, safety is a top concern. While hand sanding may be safer in some cases, an angle grinder can provide faster and more efficient results. Always prioritize safety measures, regardless of the method you choose.

How Can I Ensure Safety When Using a Manual Meat Grinder?

When using a manual meat grinder, it’s essential to follow the top recommendations for manual meat grinders to ensure safety. Always read the instruction manual carefully before use, keep hands and hair away from moving parts, and never force meat through the grinder. These precautions can help prevent accidents and injuries.

What Safety Precautions Should Be Taken When Using an Angle Grinder

1. Wear protective gear such as safety glasses, face shields, and hearing protection.

2. Make sure the angle grinder is properly grounded and connected to an effective electrical outlet.

3. Inspect the tool for any defects before use and do not use if there are any.

4. Secure the workpiece with a clamp or vise and never hold it in your hand.

5. Use the right disc for the job and make sure it is properly fitted.

6. Use the appropriate speed for the job and material.

7. Keep the guard in place and never remove it.

8. Keep your hands away from rotating parts.

9. Do not overreach or apply too much pressure when using the tool.

10. Unplug the tool when not in use.

Concluding Remarks

I hope the list of major injuries and primary safety tips associated with angle grinder would make you aware of and insist you adhere to them while you need to deal with your tool. I would emphasize if you detect any abnormality at pre, during, and post-operation, please fix them or replace parts if necessary immediately. 

If you need further consultations, you are most welcome to contact us as convenient. You can also check with the manufacturer to efficiently deal with your concerns. Never get exposed to dangers by using defective machines or mishandling. 

I’m sure if you strictly adhere to all safety protocols before implementing your project, it would give you the worthy experience about angle grinder and its specialized cutting abilities. 

Always keep yourself updated with tools related to the latest information and knowledge. 

I look forward to hearing from you about your comments and feedback so that we can optimize our expertise to provide you with more specialized services in the days to come. I would highly appreciate it if you share this article with people you know so that they too have access to our excellent clients’ services.    

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About This Writer

author eric devin

Hi, I am Eric Devin and I am a professional interior architect. Since childhood, I've always enjoyed DIY projects! And, I have loved to solve simple household problems using essential tools and equipment. I have also acquired a lot of information about basic household tools settings by working with contractors.

Hi, I am Eric Devin and I am a professional interior architect. Since childhood, I've always enjoyed DIY projects! And, I have loved to solve simple household problems using essential tools and equipment. I have also acquired a lot of information about basic household tools settings by working with contractors.

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