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What is the sole purpose of a tension leaver on a bandsaw?

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Forum topic by Blackie_ posted 03-29-2013 01:57 PM 1052 views 0 times favorited 22 replies Add to Favorites Watch
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Blackie_

3392 posts in 1167 days


03-29-2013 01:57 PM

I’ve had my bandsaw Grizzly G0555P now going on 3 years and to this day I’ve not really known what the purpose of the tension leaver was for, I have an idea and that is to release tension in order to remove the blade for a quick swap without having to turn the tension dial and if that is the case mine is useless as I’ve always had to take the time to turn the tension knob in order to reduce enough tension in order to remove the blade so I’m wondering what it’s purpose really is, if not to remove the blade on a quick turn around.

Thanks

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs


22 replies so far

View JustJoe's profile

JustJoe

1554 posts in 693 days


#1 posted 03-29-2013 01:59 PM

It’s to reduce tension on the blade when you’re not using it.

-- This Ad Space For Sale! Your Ad Here! Reach a targeted audience! Affordable Rates, easy financing! Contact an ad represenative today at JustJoe's Advertising Consortium.

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HorizontalMike

6938 posts in 1568 days


#2 posted 03-29-2013 02:02 PM

Also important, to reduce the tension on the tension spring. The spring can/will fatigue over time, so the tension lever will help prolong the life of the spring.

-- HorizontalMike -- "Woodpeckers understand..."

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Blackie_

3392 posts in 1167 days


#3 posted 03-29-2013 02:03 PM

OH Ha OK DOH I do remember doing that when I first got the saw, I’ve gotten out of that habit as I use it to often and spaced that, thanks Joe

Another thanks Mike, sounds like I should get back into the habit of using it when done for the evening.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View William Olsen's profile

William Olsen

11 posts in 578 days


#4 posted 03-29-2013 02:28 PM

It also great to have a reminder on the saw to de-tention or re-tention.

http://williamolsendesigns.com/

-- William Olsen Designs

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Greg..the Cajun Box Sculptor

5097 posts in 1963 days


#5 posted 03-29-2013 03:11 PM

the tension knob also reduces the constant pressure on the bandsaw tires…that will wear out the tires and put indentations in them prematurely. my bandsaw has a lever in the back to de-tension the blade…so it is much easier than constantly turning the wheel…and the lever allows the tension to easily adjust to its setting when riased.
I believe Carter makes a kit to adapt most bandsaws to this method.

-- If retiring is having the time to be able to do what you enjoy then I have always been retired.

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DocSavage45

5001 posts in 1497 days


#6 posted 03-29-2013 03:11 PM

There is a saying..”When all else fails ,read the book.” LOL!

-- Cau Haus Designs, Thomas J. Tieffenbacher

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Blackie_

3392 posts in 1167 days


#7 posted 03-29-2013 03:42 PM

No Thomas, when all else fails ask on LJ’s LOL

After reading these comments I do feel a bit out of place as I do remember I just forgot, haha.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View Jim Jakosh's profile

Jim Jakosh

11464 posts in 1760 days


#8 posted 03-29-2013 06:36 PM

It is for reducing the tension when not in use, but I only release mine when I change a blade. I kind of forget about it all the other time!!!!!!!!!!! But, I love that saw!!!!!!!! It would be the last thing to leave my shop if I had to cut back!! My saw gets used every day so there is not much time to release it!!................Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View HorizontalMike's profile

HorizontalMike

6938 posts in 1568 days


#9 posted 03-29-2013 09:56 PM

I run a 3/4in 3-tpi on my 14in BS and that is its maximum setting, so I de-tension between every cut. I also made a ’hang-tag’ and put it on the lever to warn/remind me!

-- HorizontalMike -- "Woodpeckers understand..."

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Blackie_

3392 posts in 1167 days


#10 posted 03-29-2013 10:01 PM

Largest blade I run is a 1/2” but it’s normally got a 3/16” most of the time so not much tension on the norm.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View Donna Menke's profile

Donna Menke

568 posts in 2921 days


#11 posted 03-30-2013 01:13 PM

James 101- so good to read that I am not the only one who never de-tensions. As a matter of fact my 1972 12” Craftsman has the original tires and only gets tension relief when I’m changing the blades. Granted, it always has a 1/8” blade on it, but the 14” Jet with the 1/2” blade is also never de-tensioned. My blades last as long as anyone’s relative to use/abuse. One time I thought I would try loosening tension after cutting for the day, but the next time I turned the machine on I forgot to re-tension. Not a pretty picture.
My saws go for months without being used- and then get used for 6 hours a day for a week. Common wisdom says I should de-tension, but I don’t.

-- "So much wood. . .so little time!" www.woodworks-by-donna.com

View doubleDD's profile

doubleDD

2459 posts in 698 days


#12 posted 03-30-2013 02:07 PM

I have to say that I too don’t use the tension knob but with a little note on it as mentioned above would be a good idea. Thanks for the tip.

-- --Dave, Downers Grove, Il. When you run out of ideas, start building your dreams

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Blackie_

3392 posts in 1167 days


#13 posted 03-30-2013 04:11 PM

Since my plug is right by the tension leaver, if I de-tension I unplug, a great reminder for me.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

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Pimzedd

450 posts in 2458 days


#14 posted 03-30-2013 07:35 PM

Donna, I’m like you. Leave tension on all the time. Use it once a month if that. Changed the tires about 30 years ago. No impression on the tires. Can’t remember the last blade break.

I think blade break is due mostly to use. The bending two times per revolution leads to crystallization of the metal. I taught shop for 34 years. Had three bandsaws in the last shop. Bandsaws were used almost daily. Always left under full tension. Typically a blade would get dull before it broke

Just my two cents worth.

-- Bill - Mesquite, TX --- "Everything with a power cord eventually winds up in the trash.” John Sarge , timber framer and blacksmith instructor at Tillers International school

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Blackie_

3392 posts in 1167 days


#15 posted 03-30-2013 07:43 PM

Bill I buy my blades from a local blade maker and sometimes his welds aren’t the greatest hence breakage for the post part they are all good and the cost is very reasonable.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

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