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help with wandering bandsaw cut please

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Forum topic by glen posted 11-09-2018 07:12 AM 370 views 0 times favorited 9 replies Add to Favorites Watch
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glen

171 posts in 2729 days


11-09-2018 07:12 AM

Topic tags/keywords: bandsaw drift blade help

Hi All – I’m looking for help with a weird bandsaw problem. Ok, weird to me.

I’ve been experiencing odd drifting of the blade at the start of the cut. The blade will curve into the cut, and then find a straight path when cutting with the fence. It seems to be on the first few inches of a cut, then it’s straight. I’ve tried a lot of things to try to correct it – Snodgrass blade positioning (gullet centered on wheel), Fortune blade positioning (fully centered blade), adjusting guides, low tension, high tension, adjusting fence for possible drift, etc. No luck. The only thing I haven’t done is try to shift the table to make it parallel with the blade (doesn’t make sense to me to do that since it only seems to be at the start of the cut). The fence is parallel with mitre slots. Things are worse with woods thicker than 1”.

I’m using a laguna 14” SUV bandsaw with a new, sharp 3TPI 1/2” blade. The only thing i’ve noticed that I haven’t been able to fix yet is that the ceramic inserts in my guides are a little uneven.

Any thoughts of things to try or other causes? I’m scratching my head on this one

Thanks in advance

-glen


9 replies so far

View Peteybadboy's profile

Peteybadboy

502 posts in 2126 days


#1 posted 11-09-2018 12:18 PM

Maybe the way your guide bearings are set up? You mention Snodgrass, review is set up for bearings on you tube. If not that could it be tension of the blade?

-- Petey

View GR8HUNTER's profile

GR8HUNTER

4931 posts in 889 days


#2 posted 11-09-2018 02:04 PM

your not trying to force wood through ? :<(((

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN

View Aj2's profile

Aj2

1803 posts in 1974 days


#3 posted 11-09-2018 02:52 PM

Most likely it’s the blade. Have you checked the throat plate is flush with the table and something wonky is not happening there?

-- Aj

View Lazyman's profile

Lazyman

2561 posts in 1564 days


#4 posted 11-09-2018 03:10 PM

Dull or dirty blade can cause problems. If you have pitch build up, try cleaning the blade. I coil the blade and soak it in a large cheap plant tray filled with Simple Green and the build up wipes right off.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View glen's profile

glen

171 posts in 2729 days


#5 posted 11-09-2018 04:04 PM

Peteybadboy – I’m going to try disengaging the guides. They aren’t bearings but ceramic blocks on the laguna. I saw a video from an australian guy, claims he learned from Fortune, where you rip a line without the bearings and adjust the position on the wheel depending on how parallel you are to your line.

GRSHUNTER – no, not forcing. going slow

Aj2 – good thought. The plate is flush. It’s a brand new high quality blade, but certainly could be a defect

Lazyman – Good thought, but the blade is new and sharp.

View HokieKen's profile (online now)

HokieKen

6623 posts in 1315 days


#6 posted 11-09-2018 07:47 PM

I’d still try a different blade even if that one is new. I’d want to rule it out right away if possible.

-- Kenny, SW VA, Go Hokies!!!

View Phil32's profile

Phil32

176 posts in 80 days


#7 posted 11-09-2018 11:07 PM

Be sure the ceramic guides on the sides of the blade are positioned behind the gullets of the saw teeth. If too close to the teeth, they could damage the tooth set and cause the erratic wandering you describe.

-- Phil Allin - Ventura, CA

View sawdustjeff's profile

sawdustjeff

18 posts in 1717 days


#8 posted 11-09-2018 11:31 PM

I had guide block problems with my Laguna 14/12 and another Lumberjock member told me to call Laguna Customer Service. When I did, I found that they are the MOST helpful and knowledgeable people I have ever encountered. Turns out some of the guide blocks were not glued to the aluminum block any more.
I apologize if this post sounds like “read the instructions, stupid” but they seem to really want to help.

View glen's profile

glen

171 posts in 2729 days


#9 posted 11-09-2018 11:45 PM

Phil – the blocks are behind the teeth, but thanks for the thought

Jeff – I’ll give them a call if I can’t figure it out over the weekend. Good idea!

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