How to Use an Angle Grinder to Cut Metal? – Complete Guide In 2021

Cutting Metal With an Angle Grinder

Place, turn-on, and cut- using an angle grinder is that easy if you don't want precise cuts anymore.

But it's impossible to get a proper cut in such tiny effort. In fact, using an angle grinder is quite tricky.

To make a proper cut, the first thing you will need is the technical support.

A smooth cut is a collective effort of an efficient wheel and the expertise of the operator.

If you can concatenate both of the parameters, cutting the metal will be the easiest job.

But how could you find out the right wheel? 

To sort this problem out we will help you to choose. 

Besides, you need to know how to use a grinder and what the pre-doings are to cut the metal.

Selecting a proper wheel which is for cutting metal:

An efficient wheel can cut the metal like butter. But it's tough to meet a precise wheel unless you pay heed to the performing parameters.

So whenever you are making the purchase, look for the following factors warily.

Material type:

Depending on the materials, there are different types of wheels. If you are dealing with hard stuff, then you should go for finer grit size.

But for the comparatively soft kind of material, coarse grit size wheels work the best.

So while buying the wheel, consider your material type first.  

The shape:

Many of us overrides considering the shape. It is an empty-headed verdict. The material shape might be in several forms.

You can't cut in all shapes with the same wheel. To get the best service, there is no arguing considering the shape of the metal. 

Type of machine:

It's not like you will use just the wheel. So you should know which wheel will work better with your device.

Your grinder might demand some specific pick. And I am very sure you won't appreciate the new purchase of grinder for your wheel you bought.

So, Find out some wheel according to your grinder requirements. 


Some grinder owns breakneck speed, and all wheels can't go with their flow.

So before making the purchase, you need to find out the probable speed. Once you know it, then buy the one which goes with the speed. 


As is the evil, so is the remedy.

Let's say, your material is so big. That means a small wheel won't be perfect for you. You should go for the big ones. 

On the other hand, if the metal you are going to cut is small, then buy the normal ones. 

Dry or wet: 

You have to consider that, in which situation you will do your work.

For example, we can say, if you work on a dry surface, there is a specific kind of wheel available for you.

If your cover is wet, then you should go to the other one. 

Safeties before you start cutting:

Safety matters, right? 

It's essential to ensure enough personal safety, especially when you are handling sharp stuff.

Let's see what security measures you should keep in mind-

Protect your eyes- 

It won't be a wise decision to start using an angle grinder without protecting your eyes. A silly mistake can cause irreplaceable harm.

Wear the eye goggles before start cutting. Make sure the eye goggles are well protected.

Because, the kind of work you used to do, it emerges lots of bruising in the air. That's why you should consider eye safety before anything else.  

And not only the eye goggle but you also need a face shield to protect your face from unrestrained sparkles.

If the sparkle reaches your face anyway, it has the potential to harm there enough. So, you can’t rely only on the eye goggle. 

Safety boots- 

To err is human. 

You can't be sure that anything won't happen, especially such workplace that you stay in.

Once you start cutting, there are high possibilities some unexpected situations may arrive.

So the regular shoes are not enough to protect your feet. You have to put the specialized boots while working with the grinder.

Fitting cloth- 

There is no way ignoring your cloth fittings no matter how you look. Put on a suitable cloth while working with sharp stuff.


The loose garment doesn't follow the body movement right away. If the grinder bites your clothes anyway, it can be hazardous. 

Else, you might get electric shock or spark anyhow. You can't overlook any possibilities, whether it is tiny or large. 

Besides, a fitting cloth will allow you to use the angle grinder with enough comfort. 

Wear gloves- 

If anything is in the topmost risk, then it's your hand as using a grinder is a craft of hand.

If somehow you show any negligence and anything wrong occurs, then that will be a really big issue. 

That's why to secure your hands, wear a pair of well-upholstered hand gloves so that the edgy wheel can't reach your wrist even by accidentally. 

Secured floor- 

The surrounding must be clear for a comfortable cut. Keep the workplace free as much as possible.

And make sure you have a perfect floor to work. It should be completely dry and won't be slippery at all. 

Once you are done with the safety measures, be ready to go.

Prepare the base metal...

Now it's time to prepare the metal before start cutting. At the very beginning, consider a flat surface.

All of your efforts can be ruined if the cut gets inappropriate because of any misplacement of the metal.

Then clamp the metal with a table or somewhere else. Make sure you clamped it tightly because after a while, it is going to take a significant amount of pressure, and it can’t nod at all.

After placing it accurately, clean the metal with a brush, so that nothing useless remains on it.

If the metal contains any rust, rub it with something stiff and then make the cut.

Before cutting, make sure the metal is completely dry. A wet surface can create many difficulties here.

Prepare the grinder:

Time to prepare your grinder!

Preparing the grinder is simple. I hope you have found out a correct wheel for your grinder.

Once you get that, open the spindle and put the wheel inside. Ensure that the wheel sits perfectly. 

Otherwise, it might create a problem while you start working with it. Then tighten the nuts you opened. 

Now your grinder is ready for work. 

Cutting instruction...

Here comes the most awaiting part. Once all the solders are ready, then you can start the work.

Switch on the button and start grinding. Make sure no other body part came into contact while starting the machine.

Hold the machine with enough power. As the grinder will work at tremendous speed, it will create continuous jerking.

So, you should hold it properly. 

Secondly, make a plan for how you want to cut it. Don't move the grinder here and there.

When you change the direction, do it according to the plan. If you just turn it anyway, it will be challenging to meet a smooth edge.

Remember, you should not force the grinder to cut. Allow the grinder to cut the metal automatically. Unnecessary pressure might cause a fracture. 

Once you are done with cutting, notice the edge; some work still needs to be done. The sharp edge needs some polishing to make it smooth.

To make it perfect, you need to remove the regular wheel and insert a 40-grit flapper. It will fix the edges instantly.  


Using a grinder is neither easy nor tough. It is all about the skills and pre-doings. You can't have the craft in a short time.

It needs some time to gain expertise in any field. But if you know the whole process, being skilled will be a matter of time.

So, follow the instruction carefully. Soon you will be a real expert. 

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