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Teeth set always one direction

7/27/23       
Nathan Barnard  Member

Website: http://www.nathanscustomcabinets.com

I just began using a woodland mills sharpening system and after a couple dozen blades sharpened I notice that whenever I set the teeth the inside ones have lost their set and need adjustment, but the outside ones are usually fine. Is this normal or indicating that the blade is not cutting square, perhaps I need to adjust saw frame to pitch blade down more? The mill is a homemade hydraulic setup.

Thanks,
Nathan

7/27/23       #2: Teeth set always one direction ...
RichC

It's not normal. Measure the blade across opposite teeth so you know what the kerf width should be. Then measure the kerf. This could tell you if the blade is twisting in one direction to wear the teeth more on one side. Are you seeing any shiny side on the rear of the blade where it might be dragging during the cut?

7/28/23       #3: Teeth set always one direction ...
Nathan Barnard  Member

Website: http://www.nathanscustomcabinets.com

Thanks Rich for that, and saying it's not normal. I'll check the back side of blade. It has only 1.25" wide band, so might have to be quite off to touch the back on wood cerf. I'm used to setting up fence on vertical bandsaw, where you find natural direction of cut via freehand cut, then align fence parallel. Wonder if there is a way to do this on a sawmill (horizontal bandsaw)? Is it normal just to adjust guides to twist blade, or better to adjust wheels and/or actual saw chariage/frame? I always would back off all guides, align tracking and table/fence first, then bring guides up to blade to hold it there with minimal force when not cutting.

7/29/23       #4: Teeth set always one direction ...
RichC

That Woodland has side guides on the blade? Most band saw mills are adjusted so the wheels are perpendicular to log. Some diving and issues in the cut can be started by entering the log too quickly. It's good to start the cut slowly and they adjust feed speeds when the blade is fully in the cut. 2nd big issue is running a dull blade. Logs can carry a ton of grit in the bark and short changes in blades is not unusual if you don't have a debarked cut in front of the blade.

7/29/23       #5: Teeth set always one direction ...
Tennessee Tim Member

Website: http://tsmfarms.com

It sounds as your tracking over your bandwheels is incorrect and knocking the set out (actually "in" back to center). The teeth should overhang the wheel. Any adjustments to tracking (on most mills) are done under tension as different tensions track at different areas on the wheels.

8/17/23       #6: Teeth set always one direction ...
Nathan Barnard  Member

Website: http://www.nathanscustomcabinets.com

Thanks for the responses all. I have rebuilt the guide system and now operate the blade with about 1/4" of drop on the guides vs wheels. Helps hold blade, also one of my sons was playing with the dial guage on tooth setter :). Problem seems to be resolved for now!


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