It is currently 28 Mar 2024, 19:49
AJB Temple wrote:What has caused it though? Over tensioned wide blade?
Steve Maskery wrote:I can only assume it is caused by being under constant pressure from the tracking knob. The saw does usually have a 3/4" blade on it. which means tensioning it to the max.
Steve Maskery wrote:Yes, it's always tensioned. Quite possibly that might be a bad idea...
sunnybob wrote:When I first got my bandsaw, I unwound the blade everyday, because thats what i read I should do. I just turned the tension knob four turns, and made a little wooden tag to hang over the bearing block saying "4 turns loose" to remind me to retension the next day...
Woodster wrote:Not very scientific, more out of my own curiosity really. I mounted and zeroed a Dial gauge with a 3/8” blade at rest. I then tensioned it to its normal setting. Bandsaw frame deflection was 0.08mm. Not very much but I wonder what this would have been with a blade double the size? Could leaving the blade like this put a permanent bend in the frame? Maybe over time both the frame and blade will stretch. Not worth the risk on my modest RP BS300E for the sake of a few turns on the crank.
sunnybob wrote:Even if the deflection was 1 mm (over 100 times more than you measured )
NickM wrote:
I suppose if there is a permanent bend put into the frame, then, over time, you will need to bend it more and more to get the same tension and the bend will get bigger.
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