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72 1/2" bandsaw blade... will 72" work?

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Forum topic by Todd Clare posted 05-17-2010 09:25 PM 2576 views 0 times favorited 8 replies Add to Favorites Watch
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Todd Clare

67 posts in 2448 days


05-17-2010 09:25 PM

Topic tags/keywords: bandsaw

Hi all,

I’ve got an older Delta 10” bandsaw. Inside the door is the diagram of blades, part numbers, and the different radii the different blade widths can cut. On that sticker it says they are 72 1/2” blades.

Now everywhere I look, I see 72” blades (conceptually 1/2” short)... I’m wondering if those will work or if i really need to chase down 72 1/2”?

In my (simplistic) mind, a 1/2” shorter blade would still work, I would just have more tension at a lower setting than with the slightly longer blade. Of course my simplistic mind also doesn’t want its not so simplistic fingers cut off, so I thought I’d poll the group.

Thanks!

-- Todd (Denver, CO -- Highlands)


8 replies so far

View TheDane's profile

TheDane

4997 posts in 3126 days


#1 posted 05-17-2010 09:31 PM

72” blades would probably work okay … you would just lose some of the range of your tension adjustment.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

View Michael Murphy's profile

Michael Murphy

452 posts in 2468 days


#2 posted 05-17-2010 09:36 PM

It probably depends on how much adjustment you have in the upper wheel tensioning. My Powermatic 14” can use from 95 down to about 93 1/2. the smaller limit is pretty tight and you have to kind of work it on there. If you have 3/4 ” of travel or so on the tensioner then your lower limit is around 71” I would guess.

-- Michael Murphy, Woodland, CA.

View SCOTSMAN's profile

SCOTSMAN

5839 posts in 3048 days


#3 posted 05-17-2010 09:37 PM

I agree with that too Lombardi.If you don’t have a spare half inch of tension in your machine free then there is a badly designed bandsaw.I figure you will be fine however.Alistair

-- excuse my typing as I have a form of parkinsons disease

View CharlieM1958's profile

CharlieM1958

16242 posts in 3681 days


#4 posted 05-17-2010 09:46 PM

I cannot imagine it being a problem.

-- Charlie M. "Woodworking - patience = firewood"

View richgreer's profile

richgreer

4541 posts in 2537 days


#5 posted 05-18-2010 12:16 AM

I can state as an absolute fact that if your saw requires a 137” blade and you make a mistake and buy a 133” blade you will never get it on. For me, another lesson from the school of hard knocks.

I don’t think this is particularly relevant to the question at hand where the discrepancy is 1/2” instead of 4”.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View Michael Murphy's profile

Michael Murphy

452 posts in 2468 days


#6 posted 05-18-2010 12:55 AM

I keep my Blade stretcher on the shelf with the Lumber stretcher and skyhooks. I use my left handed frying pan in the kitchen.

-- Michael Murphy, Woodland, CA.

View jim C's profile

jim C

1467 posts in 2561 days


#7 posted 05-18-2010 01:17 AM

Just for reference, I have a Jet 12” bandsaw and it uses a 82-!/2” blade. There are a lot of 80” blades available, but not a chance they will fit. A 1/2” difference may work, but any more than that probably won’t.

Give it a try and let us know.

-- When I was a boy, I was told "anyone can be President", now I'm beginning to believe it!

View Reuben's profile

Reuben

4 posts in 2396 days


#8 posted 05-19-2010 08:09 AM

You only need a 1/4” travel in your adjuster to accommodate a 1/2” shorter blade. The missing half inch in blade length is split between the up-going and down-going sides. Unless you’re completely out of travel, it’ll fit fine.

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