41
The dimension from the back of the blade to the front of the teeth. The wider the
blade, the stiffer the blade and the straighter the cut. This is usually called beam
strength. But wide blades cannot cut small radiuses.
The narrower the blade, the more flexible the blade and the greater the tendency the
blade has to wander. These have low-beam strength, but can cut small radiuses.
Blades are available from 1/8" up for your machine.
The width of the saw cut. The larger the kerf, the smaller the radius that can be cut,
the greater the amount of wood the blade has to be removed by the blade and the
greater the horse power that is needed because the blade is doing more work. The
greater the kerf, the larger the amount of wood that is being wasted by the cut.
The cutting angle or shape of the tooth. The greater the angle, the more aggressive
the tooth and the faster the cut. But the faster the cut, the faster the tooth will blunt,
and the poorer will be the surface finish the cut will have. Aggressive blades are
suitable for soft woods but will not last when cutting hard woods. The smaller the
angle, the less aggressive the tooth, the slower the cut and the harder must be the
wood that the blade is suitable to cut. Hook teeth have a progressive cutting angle
and take the form of a progressive radius. They are used for fast cutting where finish
is not important. Rake teeth have a flat cutting angle and are used for a fine surface
finish of the cut.
.
The area in which the sawdust has to be transported through the wood, the
larger the tooth (pitch), the bigger is the gullet.
The angle from the tip of the tooth back. The greater the angle, the more
aggressive the tooth but the weaker the tooth.
This is the ability of the blade to resist bending backwards. The wider the blade, the
stronger the beam strength; therefore, a 1" blade has far greater beam strength than
a 1/8" blade and will cut straighter and is more suitable for resawing.
As you will have seen from the previous section, there are a great number of
variables. The blade selection that you will make will greatly depend on the type of
work that you intend to do with your machine. If you have experience with the
Width
Kerf
Hook or Rake
Gullet
Relief
Beam Strength
Blade Selection
Содержание 14-Twelve Bandsaw
Страница 53: ...53 Electrical Drawing...
Страница 54: ...54 Industrial Work Light Optional Exploded View Drawings and Parts List...
Страница 55: ...55 Lower Wheel And Motor Assembly...
Страница 56: ...56 Stand Assembly...
Страница 57: ...57 Table and Fence Assembly...
Страница 58: ...58 Upper and Lower Blade Guides Assembly...
Страница 59: ...59 Upper Wheel Assembly...
Страница 60: ...60 Wheel System Optional...