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Gullet Cracks

There is no substitute for a well designed, properly maintained, and fully functioning bandsaw machine. When things go wrong, it is usually due to maintenance having been avoided for any length of time. Avoiding gullet cracks is part of an ideal maintenance procedure. The gullet is the second hardest working bandsaw feature. A properly cleaned gullet is critical to achieving correct cut, appropriate band cooling and lubrication, and for adequate chip removal to occur. Gullet cracking stems from a number of variables, but the likely cause is the machine and not the blade. Band straightness, too tight blade guides, too high blade tension, too heavy a …

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Vibration and Chatter

Vibration, worn wheels, ill-fitted belts, wobbly blades, and shoddy performance are all the result of bandsaw machine equipment neglect, malfunction, or both. They are also known causes of excessive noise in operation. By minimizing these sound issues, work environment is improved while raising bandsaw performance levels. Below are a few causes for excessive machine noise and vibration with possible solutions to the problem. Try switching blades — the raker and an off-set tooth pitch might cut down on squeal due to the left, right, off-set tooth pattern on the blade. Too low a feed rate — increase feed pressure. Check the guides — if they are cool …

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Bandsaw Vibration

Bandsaw vibration is counterproductive to a smooth cut, and having material wriggle right off the machine makes for a time-consuming effort. Solving the issue of bandsaw vibration is often as simple as maintenance, with the option to upgrade having an even greater impact on quality of cut and overall performance. With all of the moving parts on a bandsaw, possible sources of excess vibration are varied, but it would be best to start with worn or inferior drive belts. Old, well-worn belts or the purchase of a cheap belt with lumps or inconsistencies will indicate just cause for unnecessary vibration. Blade check comes next. Loosen and …

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Saw Blade Stripping and Breakage

Stripped bandsaw blade teeth is a common problem, and there are several causes to consider. A big factor includes use of the incorrect tooth pitch. Too small teeth for the size of the material fills gullets halfway through the cut. Pressure builds on a single tooth until it breaks and becomes lodged in the cut. Now the other teeth come in contact with the broken tooth, resulting in more broken teeth. Follow the m.o.m. rule: Minimum, Optimum, Maximum, which requires a minimum of 3- and a maximum of 24 teeth engaged in a cut in order to achieve the best …

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Bandsaw Blade Drift

Blade drift is a term that may be unfamiliar to some but is actually one of the most common problems encountered during the cutting process. Bandsaw blade drift is a tendency for the blade to change direction left or right while making a cut. Factors that cause blade drift include the following: Saw blade not centered on the crown of the tires — the crown is deformed The blade should be adjusted to run on center. Once a blade moves away from crown center, it will drift in either direction. Blade tooth damage If one side of the blade has more sets than the …

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