Horizontal bandsaw cuts crooked?

At work today the guy who works in assembly asked why his cutoff saw
wasn't cutting square anymore. He ostly cuts plastic although some
steel pipe. I told him that saws do this if the set is out of the
blade. I was told this years ago and never gave much thought to this or
what would cause this in the first place. I've run quit a few bandsaws
vertical and horizontal and it seems some are much more prone to this
happening. It also occurs much more frequently with inexperienced and
new people.
So is it correct that the set is out of the blade? What causes this?
Rosco
Reply to
Dr. Butter
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Possibly. If the set on one isde is dulled it can make a saw cut off, so can worn blade guides, or improperly adjusted blade guides, too much pressure, forcing what is being cut, wrong blade for the job.......lots of things can make a saw cut quicker, but odds are guide wear / adjustment or set is probably the most common causes.
------- I forgot more about ponds and koi than I'll ever know!
Reply to
Tristan
I never really thought about the failure mechanism, but "set" seems like a good explanation. But, as a blade wears out, it tends to cut crooked. On the other hand, if a new blade cuts crooked, something on the saw itself is out of adjustment.
Jerry
Reply to
Jerry Foster
Often it is not tensioned up to spec or it has a tooth bent and tends to cut that way. Another is to much pressure.
Maybe a hint or two helps.
Martin
Martin H. Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net TSRA, Life; NRA LOH & Endowment Member, Golden Eagle, Patriot"s Medal. NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member.
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Dr. Butter wrote:
Reply to
Martin H. Eastburn
Once, shortly after putting a brand spanking new blade on my 7x12 bandsaw I cut a piece of rod that I thought was mild steel but turned out to be something harder. I'm not sure why but it ruined the set on one side of the blade and from that point on it cut curves so I had to buy ANOTHER new blade.
Best Regards, Keith Marshall snipped-for-privacy@progressivelogic.com
"I'm not grown up enough to be so old!"
Reply to
Keith Marshall
Getting a cheap 4X6 bandsaw to cut 'straight' amounts to a black art! Yes - it can be done. Reliably - not a chance! As has been suggested all it takes is skidding a lousy single tooth on a brand-new blade on a saw that has been aligned within an inch of its damned life to send all into a spin at a right angle to reality.. And as we all are all too much aware of - it is the little things (OK - vanishingly small shit) that will fuck you up! I 'once' got my bandsaw to cut accurately. The next day; same saw; same material; same cut - No bloody way!! Nature of the beast.
Reply to
Ken Davey

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