It is important to match the blade of a circular saw to the material you are cutting. The best way to determine which blade is right for the job is to consider what youre cutting and how hard it is. For all of the following examples, well show you which blade wed recommend using for each material.
Wood:
A general-purpose blade is best for wood cutting. A blade of 10 to 30 cm is best if you plan on cutting harder or thicker woods. A combination blade is recommended for cutting wood with nails.
Hardboard And Plywood:
It is important to consider how many nails there are in plywood or hardboard you plan on cutting. If there are lots of nails, then a demolition blade is what youll need. A general-purpose blade is better.
Metal:
A demolition blade is a good choice if you plan to cut metal. These blades can cause damage to your saw so it is worth being cautious. As such, we recommend that you use a metal-cutting blade with a guard.
Cement Board:
For cutting cement boards, a demolition blade is your only option. As they can damage your saw, its important to wear safety equipment when using these blades, including gloves and an eye shield.
Masonry:
A demolition blade is the only option for cutting masonry products, including brick and natural stone. They can damage your saw if you dont wear safety equipment, so its important to wear gloves and an eye shield while using these blades.
Different Size Blades
At first glance, circular saw blades may all look the same. There are many blade sizes for every diameter of the blade. There are four common blade sizes: 7 inches, 20cm, 25cm, 25cm, and 30cm. For each of these sizes, three types of blades are available:
General-purpose Blades:
For cutting wood, the most popular choice is the general-purpose knife. It features a combination of sharp angles and flat surfaces (known to manufacturers as heels). This reduces friction when sawing through wood. It also results in smooth cuts with low kickback.
7 1/10cm Circular Saw Blades:
As the name suggests, a general-purpose blade is designed for most types of cuts on a variety of different materials. They are medium in thickness with equally spaced teeth throughout the blade’s body. They can be used to cut various materials and have an average finish.
20 Cm Circular Saw Blades:
As the most popular size for circular saws, 20 cm blades are designed to work best on this size of the blade. This diameter is for a general-purpose blade of medium thickness. Although the spacing of the teeth is different, they don’t leave a smooth finish like a blade with a 30 or 10 cm diameter.
25 Cm Circular Saw Blades:
Designed to work best on a 25 cm circular saw, these blades have medium-thickness and equally spaced teeth. These teeth leave the smoothest finish of all three general-purpose blade sizes, but theyre less likely to cut through harder materials with ease.
30cm Circular Saw Blades:
The largest of all three general purpose blade sizes, the 30 cm general-purpose blades work best when used with a circular saw 30 cm in diameter. These blades are stronger than their 8 and 25 cm counterparts. They have thicker bodies with more spaced teeth, which allows them to cut through harder materials such as wood with nails or metal.
Combination Blades:
A combination blade can make many types of cuts, as the name implies. A typical blade has 40 teeth (10%) and is most often used to cut wood with nails. While it doesnt leave as smooth a finish as 10 or 30 cm blades would, this size can cut through harder materials like plywood and hardboard.
Demolition Blades:
A demolition blade is a thickest and coarsest blade available in all three sizes. With 60 teeth (15 percent), these blades are designed for cutting through extremely heavy materials, including metal and masonry. They are more likely to cause damage to a saw. Why would you use one? They can cut through very heavy materials extremely quickly.
FAQs:
What Size Blade Can You Use To Cut A 7-inch Piece Of Wood?
A circular saw blade with a 7 -inch diameter can cut through most types of wood, including plywood, hardboard, and 2x4s.
With a 7 -inch blade, you can make smooth cuts on materials up to 2 inches thick.
8 Inches?
Blades up to 8 inches in diameter are available from some manufacturers, but they are not very common. These larger blades are designed for professionals who need the extra reach. For the average Joe, this size blade is overkill.
A 20 Cm Blade Can Be Used On A 7-inch Saw.
Most circular saws can be used with blades of 7 to 25 cm. A 20 cm blade is only recommended if you are cutting very heavy material. Otherwise, you won’t need it.
How Do You Use A 7 -inch Blade?
The teeth on the DWE7480 are designed to cut through wood with nails, so its best not to use them on materials that dont have any metal in them. With its small size and medium thickness, this blade is ideal for making smooth cuts on materials up to 2 inches thick.
