The Circular Saw And It’s Many Options

By Luis Torres

With the circular saw, you will have a sawing machine that has a jagged circular blade. It can be hand held or mounted on a table and it can run off of a batter, a small fuel engine or electricity, which is more common.

Circular saws are often preferred because they can make a variety of cuts (straight, angular, cross and circular) and are easy to handle by virtue of their structural design. The basic design for a circular saw is housing for the motor, a handle for maneuvering the saw and a trigger switch which is used to operate the saw.

The main differences that you will find in this type of sawing machine is the types of blades that are used and the torque. The torque and the blade type are co-dependent so you always want to make sure that you are keeping that in mind in order to get the desired function you want.

The blades within the circular saws are either mounted to the drive shaft or the mounted motor can drive them. The sawing machine blades will also vary in terms on the use you intend.

Small blades are typically used to re-saw wood where they tear through the grain while, Tungsten Carbide Tipped saws and High Speed Steel saws are used to cut through timber. To cut through metal though, large diameter blades with slow rotational speeds are used (it increases torque).

When looking at torque, you need to know that this is the rotational force that is exerted by the blade of the circular saw. There are double gear drive sawing machines out there that will have high speeds but will have the low torque which will cut great through thin material. Worm gear saws are saws that can quickly change their motion in right angles. The cold saws will have a slow rotations speed but a high torque which is great for cutting thick material.

Generally, when you are using a circular saw, you will need to have the material clamped down with a clamp or a vice. Your material should always be measured and marked in order to be properly cut. On the saw there should be a foot plate. This will allow you to properly line up the sawing machine with the markings you placed on the material.

However, before you get started, you want to make sure that the circular saw blade is about one inch above the material you will be cutting. Press the trigger switch and then slowly move down to cut the material. When you are finished with the cut, make sure that the blade has completely stopped moving before you sit it down.

Of course, when it comes to the circular saw, the work table saw is an exception. The saw is always fixed in place and then material move into the blade.

Luis Torres is Owner of CML Machine Tools, a Circular Saw Supplier based in Johannesburg, South Africa. To get more information on circular saw technology, go to Intelligent Circular Saws

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