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Band saw running off true

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anchorman24/04/2015 11:13:53
10 forum posts

I have an old 4 1/2" metal cutting bandsaw which has suddenly started running off true.

I tried to cut a 1/2" square piece of mild steel and noticed that it had cut about 45degrees out of true, does anyone know why this has suddenly started to happen . The blade is tight and the guide rollers are as near to the cut as I can get them .

mechman4824/04/2015 11:24:01
2820 forum posts
436 photos

Try re-squaring the blade with a Engineers square sat on the base in between the vice jaws up against the saw blade & readjust the blade guides...


Simon036224/04/2015 11:26:06
202 forum posts
73 photos

My own experience when this happens - it is time to replace the blade which has probably become blunt.


Jon Gibbs24/04/2015 11:43:12
739 forum posts

As Simon says this is usually down to the set having gone off one side of the blade so that the cut is biassed towards one side.

...but if it really "suddenly" started to happen then it may be that the blade guides have slipped and so George's approach is the right one?



Edited By Jon Gibbs on 24/04/2015 11:43:54

paul 195024/04/2015 12:39:05
143 forum posts
32 photos

blunt or poor quality blade

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