What are the advantages and disadvantages of using large cut blades. I have had a great amount of expertise with bands up to 12" large, however for this specific article we will cope with the most popular purposes and that is blades within the 2"-6" width.
Let's begin with the tooth of the band saw fence blades:
We know that tooth load is very important with all bandsaw blades, and conserving tooth load down per square inch is crucial factor that a sawyer/sawfiler can do to preserve his bandsaw.
For an illustration of this let's look at the teeth of a swage tooth or a welded tooth band. Be aware that all comparisons should be fabricated from equal width bands for this comparability to be accurate. The swage tooth and the welded tooth have a full tooth width on the high or the main edge. The complete tooth has three cutting edges. It has the highest or forefront and the 2 sides.
The tooth load is created by all edges that reduce wood. The tooth width on these kind blades are often twice the width of the body. As an illustration, if the body is.042 then the tooth is normally created to be at least.084. So each tooth is reducing a kerf (path) through the log at least.084.
The perimeters of the tooth are also reducing and including tooth load. All of the slicing load is distributed into the gullet and most of the stress is at the narrowest place of the band which is the deepest part of the gullet. The body is pulling the tooth via the lower and the tooth is beneath load and is pried backward in micro quantities and the steel molecules on the narrowest part of the gullet are being stretched and being put below great stress.
The band saw fence plan metal is, for fundamental understanding a spring, or spring steel. I say this as a result of it has the ability to stretch a certain distance and return to its unique shape. Keep in mind, the time period 'sure distance' this is important.
Every molecule of steel is spherical in shape, and will be stretched or elongated to a certain distance before it is harassed and begins to remain elongated. When a molecule stays elongated it has been distorted within the gullet from pulling too giant (greater than the physique molecules can take) of a tooth load.
The band gullet has what we call a protracted front. We say this because the front has stretched but the molecules in the back of the band have remained un stretched. This situation causes a hump, that rises up within the middle portion of the band, or in other words the middle of the band will hump towards the slab side and the mirror picture is on the log facet being concave. At this point the band will dive into the log every time!
Word: A superb spring has the power to elongate or compress a sure or prescribed amount and return to its original form tens of millions of instances with out shedding strength. It is only when the prescribed quantity is exceeded that it turns into distorted and loses strength. Think of valve springs in a gas/diesel engine. They function within their capacity to increase, compress and return each time and run nearly eternally under harsh conditions. They don't exceed their steels means to stretch and return.
