Like many items procured second-hand or many years ago, the manual can easily be misplaced. For bandsaws whose saws have seen their last day, the length of the blade can be a tricky number to determine. However, with a little bit of math and some measuring, the number is easily found. This article will go step by step to finding the length of any bandsaw blade needed.
Take the old bandsaw blade and mark a spot. Lay the tape along the blade to determine its size. Don't worry about finding the specific length that the tape reads. The number can just be rounded.
Without an old bandsaw blade, turn the tension knob so that the upper wheel is at its lowest point. Measure the height between the two wheels from the center of the lower wheel to the center of the upper wheel. This measurement will be referred to as "Length 1." Raise the upper wheel as high as it will go and repeat the measuring process. This measurement will be referred to as "Length 2."
Measure the diameter of one wheel and multiply by 3.1416 to find the circumference of one wheel.
Multiply "Length 1" by 2 and add the circumference of the wheel. This number is the shortest possible length the bandsaw blade can be. Repeat the process with "Length 2" to find the longest possible length. Add the two lengths together and divide by two to find the average bandsaw blade length, which is the length to buy.
Things You Will Need
- Old bandsaw blade
- Measuring tape
- Keep this information at hand or keep an old bandsaw blade around to measure in the future.
- The number is just a healthy estimate for those who do not have the instruction manual. Refer to the manual whenever applicable.