Blades will dull quickly if used at too rapid a speed for the metal being cut. Also, if the metal to be cut is too hard for the pitch of the blade, you will experience abnormal wear. The most common cause of premature blade wear comes from using too fine a pitch blade and from feeding the blade too heavy.
If you do not feel sharp edges then the blade is dull. To help choose a band saw blade, here is a chart showing the recommended number of teeth for various materials and thicknesses:. In general the following rule applies to choosing the speed of your bandsaw blade: The harder the material, the slower the speed; conversely, the softer the material, the faster the speed.
The faster the speed, the finer the finish produced on the cut surface. Remember to put proper tension on your blade before using the bandsaw and release the tension when you are done. Click for Dake BandSaws. Click to return to our Machine Tool Blog. Click for the American Machine Tool Homepage. Terms and Conditions.
Privacy Clause. Band Saw Blades. What are the different reciprocating saw blade types? What are the best reciprocating saw blades for wood? Who are the different saw blade manufacturers? What is the right sawzall blade for fiberglass? What is the best sawzall blade for hardened steel? Do I need special plaster sawzall blades? This helps the blade to feed into the material more aggressively. The result is faster cutting rates. Hook tooth blades are commonly used for long cuts in thicker wood, hardwood, plastic and metal.
Variable Pitch blades have alternating sets of different sized teeth to provide a fast cut with a smooth finish, ideal for joinery and cutting curves. A raker tooth set has one tooth going to the left, one to the right, followed by a straight, or unset, tooth, which is called a raker. An alternate tooth set has one tooth going left, one going right, then left, right, etc. There is no raker tooth. The double alternate plus raker has an unset raker tooth following two left-right combinations.
A wavy tooth set has groups of teeth set left and right, separated by unset raker teeth. Wavy set blades are made primarily with the small teeth recommended for cutting thinner metal sections, tubes, pipes, thin sheets, etc. Choosing an appropriate set provides a balance between sawdust and air in the space between the body of the saw blade and the material it is cutting. The sawdust should be warm to the touch, not hot or cold.
This creates hot, packed sawdust and leads to short cutting times and premature blade breakage. This is about the worst thing you can do for your bandsaw blade. Knowing the SFM for the various settings of your bandsaw allows you to select the proper speed for the material you want to cut.
You should find the SFM settings in your owners manual. Using the correct size blade is essential to the performance of your bandsaw. More accurately, this should be called flutter setting. The objective is to set the correct tension in a more dynamic way, while the bandsaw is running.
Blades get hot from cutting. They expand and contract and, over time, can even over tension themselves. Like getting a flat spot on your tires from sitting in one spot for too long, leaving your blade under tension, strapped around the drive wheels, creates a memory in the steel that could lead to premature failure from metal fatigue. Leaving the band tight on the saw also distorts the crown and flattens the drive tires, making them very hard. Tension also stresses the motor, shaft V-belt and drive pulleys.
Never use water as a lubricant on bandsaw blades —or any other blades, for that matter. Water is not a lubricant. It can rust and damage the body and gullets of the bandsaw blade as well as the material being cut. There are a number of products available that are designed to specifically to lubricate blades, bits and cutting tools. Bostik makes an aerosol called Dri-Cote, which lubricates and protects all types of cutting tools with its dry film technology.
There are also solid compound cutting bars and sticks that you run against the blade to add lubrication. Remember to always apply lubricant to BOTH sides of the blade. Ground Side Set: This design cuts according to the oblique angle of the teeth. The higher the hook angle, the more aggressively the saw blade will cut the material. This is great for getting through a lot of material fast, especially when you are ripping.
Low negative hook angles - those that have teeth that angle backwards away from the direction of rotation , are good for crosscutting, cutting plywood panels or non-wood materials, such as plastics and metal. By understanding whether you need a higher number of teeth and the desired teeth shape, this helps you select the right blade to achieve the desired finish on your material. Download the Wood Range catalogue and follow these steps to choose the right blade for your needs:.
Product dimensions can be found underneath each product line when viewing the product in the catalogue, e. A variety of cut types are available, such as ripping and finishing. You can also see the teeth design information in the key specification data underneath each product line. When working on wood materials, we recommend wearing a mask and safety glasses, as well as ear protection and gloves during heavy duty usage.
It can also be beneficial to use a vacuum extraction unit to remove shavings or debris. If a reduction ring is necessary, please thoroughly check its quality and ability to perfectly fit the bore of your blade. We recommend regularly if not after every use cleaning your blades to extend the blade life and maintain the quality of cut. To help understand the different types of wood, read the beginner's guide to wood.
For further information about wood cutting and choosing the right blade, get in touch with one of our Norton experts.
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