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Bandsaw Setup - Laguna 14bx

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Forum topic by mocon posted 10-12-2017 09:23 PM 307 views 0 times favorited 9 replies Add to Favorites Watch
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mocon

3 posts in 9 days


10-12-2017 09:23 PM

Hi everyone. I’ve been a long time lurker but now have a question.

I just set up a new Laguna 14bx bandsaw. I have gone through the manual’s set up process meticulously a few times but have gotten the same results. I’ve been waiting 5+ hours for a call back from Laguna, so thought I’d ask here.

When running, the blade oscillates rapidly forward and backward a bit over 1 mm (“forward” meaning into the cut). There is no side-to-side flutter. Looking through the tracking window, the blade moves correspondingly back and forth across the wheel. It oscillates fairly quickly – it’s not just one spot on the blade that moves. Tracking and tensioning changes do not affect the movement.

The blade is new (1/2” Laguna Proforce 3TPI) and seems to be otherwise ok. The weld looks flat and smooth and seems to come together without any angle when I hold a straight edge against it. I don’t have another blade to try.

It looks like the tire is oscillating with the blade (i.e. it is not perfectly centered on the wheel). The wheel itself seems ok. Not sure if the blade is affecting the tire or vice versa (or neither). I tried pushing the tire flush to one side of the wheel. That seemed to help a bit for a few seconds but then the issue returned.

So, is the tire the issue? Or is that just a symptom of something else I have done wrong (or may be wrong with the bandsaw)? I set the tension a variety of ways (per the manual and then by the “flutter” test) and tracked the blade both on center and gullet on center – nothing changed the blade movement problem for better or worse.

The saw otherwise seems to cut fine. I’ve run it for a fair amount of time to see if the oscillating improves or worsens, but it seems constant. I’m not sure how loud the machine should be, but there doesn’t seem to be any unexpected sounds or volume. Not sure if the “nickel test’ has any validity, but I can balance the nickel on the table during start up, while running, and shut down.

Thoughts?

Thanks!


9 replies so far

View WhyMe's profile

WhyMe

880 posts in 1344 days


#1 posted 10-13-2017 12:07 AM

I’d try a new blade to see if that takes care of the problem.

View Desert_Woodworker's profile

Desert_Woodworker

1207 posts in 997 days


#2 posted 10-13-2017 12:32 AM


I d try a new blade to see if that takes care of the problem.

- WhyMe

+1 Also, set it up with this method-
https://www.youtube.com/watch?v=wGbZqWac0jU

-- Desert_Woodworker

View mocon's profile

mocon

3 posts in 9 days


#3 posted 10-14-2017 03:20 AM

Thanks for the replies WhyMe and Desert_Woodworker. I plan to order another blade of a different size, which I would have needed in the future anyway. I did view that video, and followed its advice (although I also followed other’s advice when the problem remained).

I heard back from Laguna customer service yesterday after posting (about 7 hours after calling, which probably isn’t unreasonable). A courteous young man listened to my problem, he asked me a few questions about tensioning and tracking which I answered in the same overwrought detail as I described above.

After 2 – 3 minutes of that, he said that the tire may have been overstretched or otherwise compromised during assembly and that he could send me some newer tires that they are now using. It may just have been a strategy to get me off the phone quickly, but it seemed to me that they have heard this problem before and were aware of a problem with their tires or their assembly. He also said he would send me an email with a link on tire replacement technique and that I would then have his email address should any further problems arise.

Just to close the loop for future forum searchers or for those who are curious, I will post my results once the new tires arrive. If anyone has any further suggestions in the meantime, I would be interested in learning from you all.

Thanks.

View coxhaus's profile

coxhaus

59 posts in 677 days


#4 posted 10-14-2017 06:35 AM

I would try another blade before I went to all the trouble to replace the tires. Buy a 1/4 inch blade to have an extra blade.

View msinc's profile

msinc

88 posts in 286 days


#5 posted 10-14-2017 01:40 PM

The blade is oscillating front to back and you are saying that the tire is not centered on the wheel…..the blade follows the rubber tire, the tire grips and keeps the blade from slipping as it turns. The blade has no choice but to do what the tire makes it. Laguna is telling you they have an “updated” or new tire material…...why would they just arbitrarily change tire material if there wasn’t a problem? I would call Laguna back and get the upgraded tires. They are not that difficult to change.
Maybe the blade itself could cause this, but I doubt it. I think you could change blades till the cows come home and it will still run this way, although it would also make sense that a wider blade would have more resistance than one that was not as wide. I would probably try the blade first if I had one, but you don’t, so buying another blade in the hope that this alone will fix it is more than likely a waste of time you could be getting the tires.
Just to be clear, when this thing is running and you are watching the wheels/tires the wheel itself is not wobbling in any way correct? The wheel itself {metal part} appears to be running straight and true?
Is it possible that you can try to “straighten” the existing tires on their wheels? Even if you get it better but not perfect you should see an improvement that will tell you for sure which direction to move to positively fix this thing.

View mocon's profile

mocon

3 posts in 9 days


#6 posted 10-14-2017 03:39 PM

msinc, yes they are sending me the new tires (I wrote that they “could” send them when I meant that they were sending them).

The wheel itself looks true. There is definite movement in the tire which mimics the blade. When I pushed the tire uniformly to one side of the wheel, it seemed to help for a few seconds but then returned. I may try to replicate if I get some spare time today (maybe centering instead of pushing to one side).

Since I will need a 1/4” blade in the future anyway, there’s probably no harm in trying a new blade while waiting for the tires.

Thanks for the help, everyone.

View John_H's profile

John_H

44 posts in 1489 days


#7 posted 10-14-2017 04:42 PM


Also, set it up with this method-
https://www.youtube.com/watch?v=wGbZqWac0jU

- Desert_Woodworker

I would just add that the ‘Snodgrass’ method really does work (at least it does for me)

View jimintx's profile

jimintx

473 posts in 1367 days


#8 posted 10-14-2017 04:45 PM

I have no knowledge of how easy it is to remove and replace tires on those saw wheels. However, if that was at all a reasonable procedure to accomplish, I would swap the top and bottom tires to check the effects, while I was waiting for either or both of the new tires and new blade to arrive.

You’ve already headed down this approach, but when I am assessing a problem, I try to figure out if there is any way through testing to isolate which part, or which system, is the cause of the problem.

I hope you come back and update on in how you finally resolve this. I was within a minute of buying that saw, at the last second I went a different way, but I do like that saw. I’m hoping you find a quick and easy fix to this symptom.

.

-- Jim, Houston, TX

View msinc's profile

msinc

88 posts in 286 days


#9 posted 10-14-2017 06:32 PM

I d try a new blade to see if that takes care of the problem.

- WhyMe

+1 Also, set it up with this method-
https://www.youtube.com/watch?v=wGbZqWac0jU

- DesertWoodworker

Thanks for posting Desert_Woodworker…..this is a fantastic video for anyone that owns a bandsaw to watch. You could play in a home shop or work for 20 years in a commercial wood shop and still not learn in 20 years what Alex can teach you in 20 minutes!!!!

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