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RE: Bandsaw Blade Life10/9
How many times can you sharpen a blade before you get a crack in it, when cutting Northeast hardwoods? Our blade is 19’6” long, 1 ½” wide, .055 thick, and 7/8 inch tooth spacing.
In other words, what is the normal usage one could expect from a carbon steel (not bi-metal) blade with the above specs cutting Northeast hardwood logs that are on average 12 to 24 inches in diameter?
Also, what would be the manufacturer and specific blade recommended for this type of durable cutting?
Thanks for your help.
I have experience from "Munkfors" blades. When I starts to use a new blade I "connects" a note card to the blade as will follow that blade over its life. All actions like sharpening, set adjustments, how the blade behaves in the wood is noted on the card.
Your thickness on your blades may be your problem for premature failure....depending on your bandwheel size...I think a minimum approx 26" is what I've read before...a 19" "bends the blade too much and the extreme flexing is tough on metal.
NEXT: I went to Cooks sawmills and Tim has written great articles on fine tuning your bandhead set-up. It's done miracles to saws performance!!! My next change is to add their adjustable bandguides and felt lubing system.
I hope this helps.
Have a Blessed and Prosperous day in Jesus's Awesome Love....Tim
Watch for cracks in the gullet before sharpening. A blade break at the weld is a manufacturing defect, and you can often get a batch of blades with the same defect. As Tennessee wrote, a thinner blade will be less prone to fatigue. The wood you cut will have little or no effect on the fatigue of the blade. I'm running 1-1/4" .045 blades on a 19" bandwheel and get 7-10 sharpenings. When the blade is down to 1-1/8", I discard it, since it dulls quickly once you get past the heat treated zone on the tip. As Per-Olav mentioned, when you sharpen the blades yourself, you tend to be a lot more particular about changing them at the first sign of dullness, so they just need a touch-up instead of a serious sharpening.