What Are Bandsaw Blades?

Posted on Nov 27, 2020

Bandsaw Blades

Bandsaw blades are used to cut the materials. They are a crucial part of the bandsaw. Good quality blades offer better performance to the machine and therefore a better result of the work.

Bandsaw Blades

Bandsaw blades are used to cut the materials. They are a crucial part of the bandsaw. Good quality blades offer better performance to the machine and therefore a better result of the work. The bandsaw blades come in with a belt-like style. The width, length, teeth, and material the bandsaw blades are made from all influence the cutting performance to a certain extent.


The Anatomy of Bandsaw Blades

The bandsaw blades are like a belt. The blades are comprised of three parts: the teeth, the back, and the body. The teeth of the bandsaw blades refer to the serrated cutting edge of the bandsaw blades. Though the cutting edge of a bandsaw blade is usually serrated which is why it is called the teeth, there are still bandsaw blades that do not have a serrated cutting edge. It can be thin, smooth, and sharp just like other regular types of knives.

The configuration of the cutting edge is designed depending on the cutting work the blades are used for or the materials the blades are to cut. The back of the bandsaw blades is smooth without the cutting edge. The body of the blades comes in with different widths and lengths. Again, the widths and lengths of the blades can be chosen based on the cutting work or the band saws that apply the blades.


:: Read More: Introducing Metal Band Saw Blades

The Teeth of the Blade

There are essentially four types of teeth configuration other than the smooth cutting edge. There are the standard teeth, the skip teeth, the variable teeth, and the hook teeth. When a band saw is equipped with the right blade, the machine is able to make clean cuts with precision and speed.

These four types of blade teeth are divided according to the configuration of the gullet. The gullet refers to the space between each tooth on the blade. On a skip teeth blade, the space between each tooth is bigger than that on a standard blade. The variable teeth blade has the same gullet space as the standard blade but the teeth are more pointy and sharp. The hook blades have the gullet space slightly bigger than the standard blades and the size of the teeth are bigger and the teeth look like hooks.


Blade Width

The width of the bandsaw blades determines the quality and capacity of the blades. The maximum capacity the band saw can accommodate and the minimum cutting radius is influenced by the width. With certain types of cutting works, the width of the blades should be chosen in particular. For example, if it is a resawing operation, a cant sawing operation, or a cut-off sawing operation, the width of the blade should be wider than the stander blades.

On the other hand, if it is a contour sawing, a narrow blade is better in order to cut the desired radius. Generally speaking, the wider bandsaw blades are for heavy-duty cutting works where the strength and the rigidness of the blades are important.

They need to cut through the material without bringing about the risk of breaking during the operation. The narrow blades are for more delicate and sophisticated cutting works where precision and clean cuts are required.


Blade Thickness

The proper thickness is also essential in choosing the right blade. The bandsaw blades have to withstand the heat generated during the cutting work. The heat, pressure, and flexing during the operation result in metal fatigue and eventually failure. Just like the choice of blade width, the blade thickness should be chosen according to the cutting works it is used. Thick blades are stronger but have more chance to break when bent or twisted. Thin blades are good for lighter cutting works.


How to Use a Bandsaw?

A bandsaw, or a band saw, is a type of cutting machine used to cut curves in wood logs or lumbers, rip the wood, and crosscut short wood pieces. In general, the primary use of a band saw is to cut a piece of wood material in irregular shapes. The secondary use of a band saw is to saw or rip a piece of wood into thinner slabs. A good quality band saw can make smooth cuts and is sometimes used for cutting materials other than wood.

The band saws are a kind of power tool which are typically driven by a motor. There are wheels on a band saw. The bandsaw blades are placed in the center of the wheels. When the wheels spin at a high speed, the bandsaw blades run accordingly and cut the materials on the deck. Before having the band saw run, adjustments are needed. The user needs to tension the bandsaw blades properly and adjust the guides to the desired position.

The bandsaw blades will have to be replaced because the teeth wear out as they are used. To change and install the bandsaw blades, the tension is loosened. When installing the bandsaw blades, the tension should be set based on the width of the blades. The wider the blades are, the higher the tension is supposed to be. The tension is to keep the blades tracking the guides properly. The blades may break if the tension is too high.

To adjust the guides, the positioning of the bandsaw blades is important. The back of the blade should barely touch the rear guide and the teeth, the cutting edge, should run clear of the guides. When the guides are properly set, the blade only contacts the guides when pressure is applied with the wood. Bearing guides are commonly used on the band saws these days and they need to be replaced periodically because they also wear out as the machine runs.


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