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I use a Craftsman 80" bandsaw at a job that is identical to one I own.? I replaced the blade (1/2") about a year ago, and it broke a few weeks ago making a straight cut.? Upon examination, I could see that there had been a crack where it broke, and there were 5-6 other cracks in the blade.? The saws have a scale for tensioning (based on blade width), and this one had been adjusted correctly, but seemed really tight compared to my saw (which has the same adjustment and has never had a broken blade).? When I replaced the blade this time, I used much less tension ("1/4" I think), and the saw has been running great ever since.? Before it broke, the saw had been making clicking noises that became louder and more frequent as time went on.? I searched for a cause a few times, but never saw the cracks. The point here is that over tightening will definitely cause breakage.? I know my 4x6 is sensitive to tension- too little or too much will cause tracking issues. -Dave?
On Wednesday, October 27, 2021, 05:32:59 PM PDT, Bill Armstrong <bill_1955@...> wrote:
I tighten ¡®em. A matter of ¡®feel¡¯ is all. No gizmos or hi-tech stuff, just a ¡®yeah¡..that¡¯s good¡.that¡¯ll do it¡¯. ? And, I just check ¡®em now & again, the same way. ? Other Bill ? ? From: [email protected] [mailto:[email protected]]
On Behalf Of David Pidwerbecki
Sent: Wednesday, October 27, 2021 4:08 PM To: [email protected] Subject: [4x6bandsaw] Band saw blade tension ? I have been looking into a tool that can test blade tension.? ?I changed my saw blade tensioning so that I had a 3/8" NC stud with a nut and thrust washer for tightening the blade.? ?I would tighten the blade until it ran straight then
gave 3/4 turn extra for proper tensioning the blade.? ?Recently, I am stumbling onto a different method which uses your cell phone and a tone prediction tool by J. Phil Thien: |
