startrite bandsaw parts
As is most things in woodworking it is a matter of measure twice and cut once. Remember that the left over sections of log can often be brought back to the bandsaw to made smaller bowls or squares. One of the great secrets in woodturning is the use of the bandsaw with its capability to make curved cuts easily and safely. In cutting green wood it is the use of a narrow band with wide spaced teeth that makes the cuts work. To get the best out of your bandsaw one must start with a properly adjusted blade guide blocks thrust bearings and a squared up table. It is very important to check each of these factors every time you use your saw change your blade or when your blade and blocks show some wear. A properly adjusted bandsaw is a delight to use. However if improperly adjusted it can be a major frustration. There are five simple steps one must perform in sequence to assure a properly tuned bandsaw. 1. Tension the Blade To do this you use the "blade tightening" knob that protrudes above the case of the top blade wheel. Some saws have indications for different blade widths.
Or better yet ask other woodcraft enthusiasts on their take on their power cutting tool of choice to know their first hand experience in using them. Many people ask me about wide cut blades. What are the advantages and disadvantages of using wide cut blades. I have had a good amount of experience with bands up to 12" wide but for this particular article we will deal with the most popular applications and that is blades in the 2"-6" width. Lets start with the tooth of the bandsaw blades: We know that tooth load is very important with all bandsaw blades and keeping tooth load down per square inch is the most important thing that a sawyer/sawfiler can do to preserve his bandsaw. For an illustration of this lets look at the teeth of a swage tooth or a welded tooth band. Note that all comparisons will have to be made of equal width bands for this comparison to be accurate. The swage tooth and the welded tooth have a full tooth width at the top or the leading edge.
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It is only when the prescribed amount is exceeded that it becomes distorted and loses strength. Think of valve springs in a gas/diesel engine. They operate within their ability to extend compress and return every time and run almost forever under harsh conditions. They do not exceed their steels ability to stretch and return. A good understanding of the above two paragraphs is very important to understand an accurate comparison between the swage tooth band and the set tooth that we will discuss below. Now let us look at a set tooth band of .042 thickness: The Kerf of a set tooth band is also two times the thickness. Usually .084 (sometimes more sometimes less). The difference is the set tooth shares the tooth load between 3 teeth. Each tooth is only .042 on the top or the leading edge. The most any tooth can cut is.042 wide. The average that the 3 teeth cut is only .028. The right and left tooth only cut the set amount beyond the body width. Only 2 of the teeth cut on the side and they only have 1 side to create side load which is very minimum. It is so small that I do not consider it to have a side load.
Remember the term certain distance this is important. Each molecule of steel is round in shape and can be stretched or elongated to a certain distance before it is stressed and begins to remain elongated. When a molecule remains elongated it has been distorted in the gullet from pulling too large (more than the body molecules can take) of a tooth load. The band gullet has what we call a long front. We say this because the front has stretched but the molecules at the back of the band have remained un stretched. This condition causes a hump that rises up in the middle portion of the band or in other words the middle of the band will hump toward the slab side and the mirror image is on the log side being concave. At this point the band will dive into the log every time! Note: A good spring has the ability to elongate or compress a certain or prescribed amount and return to its original shape millions of times without losing strength.