Are Angle Grinder Blades Universal?

are angle grinder blades universal

An angle grinder is one of the most versatile and easy to customize all rotary tools. With multiple wheels and discs to choose from based on the complexity of a job, it is almost guaranteed that you will get results with an angle grinder due to the universal capabilities of its accessories.

Angle grinder blades are universal because the blades and attachments that can be added to the disc are capable of cutting through a wide variety of thick materials. The blades of an angle grinder are versatile and can be easily changed based on the task’s material type. 

Since angle grinder blades come in so many different varieties for many different types of material, this article will explore all of the uses of an angle grinder blade that make it one of the most universal cutting and grinding blades on the market.

Angle Grinder Blades: An Overview

The ability to handle a variety of accessories and wheels is what makes angler grinders a versatile tool. An angle grinder comprises a spindle nut and a spindle washer you can install in various configurations that allow you to accommodate a variety of thinner or thicker wheels.

An angle grinder blade is also known as a disc and the two terms mean the same thing depending on what you may hear. There are some common types of blades that are most utilized within the industry, so let’s take a detailed look at each:

grinding blade

Grinding Blade

The most common angle grinder blade is also one of the least used in modern construction jobs. A grinding blade will be relatively thicker than other blades to conform to the thickness of metal or other rough and thick materials.

A grinding blade will also be noticeable for the addition of mesh on the bottom of the disc which allows for smooth and effective grinding. A grinding blade is used for metal fabrication and welding to smooth out any rough edges that remain after the welding process.

flap blade

Flap Blade

A flap blade is very similar to a traditional grinding blade with the addition of sandpaper on the bottom of the flange. This sandpaper attachment is perfect for smoothing over surfaces after a rigorous grinding session.

A flap blade is typically more preferable during grinding procedures due to the sandpaper being less abrasive to surfaces like metal.

cutting blade

Cutting Blade

A cutting blade is very thin in comparison to a grinding or flap blade. These types of blades are used when cutting through thick materials like metal due to the incredible horsepower and pressure that is supplied by an angle grinder.

Cutting blades cut so well because these blades are thin and require less force from the user. The smooth edges of the blade are also equipped for grinding, which allows this versatile blade to cut through virtually any material and smooth over rough edges during the process.

diamond blade

Diamond Blade

Diamond blades are made with steel with rigged grooves on the outside of the blade. These blades are designed to be used on stone, concrete, and any type of masonry work including cutting and grinding tile.

The grooves of a diamond blade are set up to catch the resistance of the grinder against thick and stubborn materials. The cut that is produced with stone or concrete is not going to be smooth and clean, therefore, the grooves of the diamond blade are in place to smooth the rough material over as best as possible.

wire wheel for grinder

Wire Wheel

The wire wheel is made of either stainless steel or carbon steel and is used to clean off material before the welding process. The tiny wires that make up this blade are spun into long strands to smooth out the surface of metal before or after welding.

Are Angle Grinder Discs Interchangeable?

All of the above-mentioned blades are completely interchangeable on any type of angle grinder. You can easily use change from a cutting blade to a grinding blade if you wish to create rough ridges or grooves in the cut material.

To display how easy it is to make each blade universal for any angle grinder, let’s take a look at the steps for changing out various blades:

  • Always unplug the unit. Whenever you proceed to attach or change an angle grinder blade, always make sure the unit is unplugged from electrical outlets. If you make a mistake and accidentally hit the power button, the results could be quite severe.
  • Twist the bolt that holds the blade in place to release the blade. For grinding and flap blades, always turn the raised portion of the nut down to ensure that the raised side of the nut seats the grinding or flap blade in place.
  • For all other blade types, use the flat side of the nut to hold the blade in place. The flat side of the nut will hold the thinner blade types in place and prevent the thinner blades from slipping out the holder.

These steps are universal across any type of angle grinder blade. Just remember to use the appropriate side of the nut-based upon the type of blade or wheel you are choosing to work with.

Frequently Asked Questions

What Is the Best Type of Angle Grinder Blade?

The best type of angle grinder blade is always going to be the blade that can be used for multiple techniques without the need to constantly stop and change to a new type of blade. This blade type would definitely be a cutting blade.

A cutting blade allows you to cut through a range of materials and also use the edge of the blade for some quick grinding touch up work after the cutting process is complete. By using the top center-most portion of the cutting blade, you can effectively grind and alternately go back to cutting to save a lot of time in what can be a long and laborious process.

You will want to choose a cutting blade that is guaranteed to withstand intense cutting pressure with the co-grinding capabilities that can be utilized with a cutting disc.

The Metal and Stainless Steel Cut Off Wheels by Black Hawk are some of the best cutting blades available due to the durability and precision put into the wheels to cut a variety of strong metals.

You can buy these quality blades as a 25-pack and the 1/16  inch thickness is guaranteed to provide razor-sharp cutting with an adequate thickness for grinding that is both durable and long-lasting.

Can You Put A Wood Blade on an Angle Grinder?

Unfortunately, angle grinder blades are not universal when it comes to cutting wood. The problem with this is the possible danger this could cause for workers.

Angle grinders spin blades between 10,000-15,000 RPM (revolutions per minute), which means that these blades are meant to only cut and grind incredibly thick and durable materials due to the intensity of the pressure.

There are numerous tools on the market you can invest in that will cut wood safely and efficiently. An angle grinder is just far too powerful of a tool to simply cut and grind wood.


Angle grinder blades are universal and interchangeable depending on whatever task you wish to choose them for. You can use grinding blades to effectively smooth off rough edges on thick materials or a flap blade to sand and polish after the grinding process.

Cutting blades are by far the most effective angle grinder blades due to the ability to both cut and grind depending on which process you are using the blade for. Wire wheels are good for cleaning and brushing metal surfaces where sandpaper would typically cause abrasions to the metal.

Always make sure you choose the right blade to use for the particular job at hand. You will find a wide variety of blades (discs) to suit your purpose.

Ben Jones

When it comes to selecting the right tool for the job there are some important factors that you have to consider. I hope by sharing some of my knowledge I'll be able to educate you on a range of grinders so you can get the job done.

Recent Content