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Author Topic: Should I go with a wider blade ?  (Read 658 times)

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Offline arky217

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Should I go with a wider blade ?
« on: April 09, 2021, 03:41:14 PM »
I was looking at some youtube milling videos and came across this one
by 'The Outdoor Guy'.



He has a Woodland Mills hm126 which uses 1.25" blades.
He switched to 1.5" wide x 0.055" thick blades and claims that they
not only work on his mill but give him about twice the life
between sharpenings and have eliminated making waves.

He doesn't say what hp his mill has but it's either 9 or 14
according to Woodland Mills web site.

Is there anything to what he's claiming ?
Would it be worth trying 1.5" x 0.55" blades on my
Norwood LM29 with a 13.5hp engine which uses 1.25" x 0.042"
thick blades ?

Arky217

Offline ladylake

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Re: Should I go with a wider blade ?
« Reply #1 on: April 09, 2021, 03:48:36 PM »
  


No, I have a 30 hp diesel and it will saw straight making the engine smoke sometimes with 1 1/4 " blades.  It's all about setup, guides. set  and hook angle.  I think he has those sandwich type guides, I think roller guides control the blade way better.  Also running .55 blades blade life will not be very good.  Steve
 
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Re: Should I go with a wider blade ?
« Reply #2 on: April 09, 2021, 05:03:15 PM »
Some here are running big mills with big motors, and sharpen their own bands.
There's more than few that have switch the other way, from thick to thin bands.
The advantages are that they're cheaper, have better flex life and sharpen as many times before they get past the tempered teeth points.
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Offline Southside

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Re: Should I go with a wider blade ?
« Reply #3 on: April 09, 2021, 05:03:53 PM »
Interesting observation by the YouTube guy.

I switched to 1 3/4" bands on my Super 70 to see if I could improve performance. Well, they do saw flatter faster but what I found odd was that I am getting more BF out of a sharp band. Can't explain why, but I am.

Yet to break a .055 Silvertip band yet with this setup. 

YMMV
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Re: Should I go with a wider blade ?
« Reply #4 on: April 09, 2021, 05:51:29 PM »
That's because you're running those big wheels, quit mocking those of us that are still spinning 19's😁
  I think a 1.5"x.055 is a lot of blade for a low hp mill, but the worst you can do is try it and they don't work out. They will probably saw well but not last very long before they break.
Too many irons in the fire

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Re: Should I go with a wider blade ?
« Reply #5 on: April 09, 2021, 06:04:34 PM »
Neither a wider nor a thicker blade stay sharper longer.  It is only allowing him to saw longer with a dull blade which is false economy.
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Offline moodnacreek

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Re: Should I go with a wider blade ?
« Reply #6 on: April 09, 2021, 07:46:11 PM »
Neither a wider nor a thicker blade stay sharper longer.  It is only allowing him to saw longer with a dull blade which is false economy.
Yes but what about production? I understand you can only flex so much gage as per wheel size but more iron [steel] means more wood sawed in any saw.

Offline Southside

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Re: Should I go with a wider blade ?
« Reply #7 on: April 09, 2021, 08:35:08 PM »
I hear what you are saying MM. But let's look at the other end of the spectrum. Big band mills, 6' air strain running 12" bands get more than 500 BF / sharpening. 

As to why, I have no idea. 
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Re: Should I go with a wider blade ?
« Reply #8 on: April 09, 2021, 08:50:17 PM »
He has a Woodland Mills hm126 which uses 1.25" blades. He switched to 1.5" wide x 0.055" thick blades and claims that they not only work on his mill but give him about twice the life between sharpenings and have eliminated making waves.
We are not talking about huge bands here which are being compared out of context. 

I am simply not giving much validity to increasing from 1.25 to 1.50 and .045(?) to .055 doubling the blade life between sharpenings.
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Offline JRWoodchuck

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Re: Should I go with a wider blade ?
« Reply #9 on: April 09, 2021, 11:19:55 PM »
Ive switched between the two pending on whats available from wood mizer without a real noticeable difference between the two. The 1 1/2 055s dont seem to fail any quicker on my 19 wheels than the 1 1/4 045s. 
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Offline longtime lurker

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Re: Should I go with a wider blade ?
« Reply #10 on: April 10, 2021, 06:25:17 AM »
You have to compare apples with apples here.

The strength of a  column is directly proportional to its depth. That's Engineering 101 stuff and it applies equally to wooden rafters, concrete piers, and bandsaw bands. The wider it is the more resistant it is to flex and the straighter it cuts.

The thicker a band the more strain it can handle so the straighter it cuts too.

Straighter cuts mean less material removed and less friction/ heat buildup.. so they stay sharper longer.

And then factor in deeper gullets for sawdust removal etcetera etcetera. And tooth options and saw profile options and on it goes.

BUT. A performance upgrade from the band requires more saw to achieve anything. A band that can cut faster straighter and longer on a saw that doesn't have the power to use it means that there is zero performance upgrade.

Theoretically though the potential difference between 1x 0.055 and 1 X 0.042 is as great as the upgrade from 1" x 0.032 to 1 is.

If you got enough saw to make it sing: Apples with apples.
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Re: Should I go with a wider blade ?
« Reply #11 on: April 10, 2021, 07:02:08 AM »
It is my impression from running .045" thick bands (1-1/4) for 19 yrs with 42 HP, then switching to .055" thick bands with 55 HP, that running the thicker band takes more HP.  So I would be surprised to hear anyone running 055 bands on a 9 or 14HP mill. 
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Re: Should I go with a wider blade ?
« Reply #12 on: April 10, 2021, 09:30:44 AM »
I watched the video and read the comments but I'm still uncertain that both blade sizes are the same blades (WM Turbo 7's for example). If not that may explain his better luck with wider blades. If wider blades are better quality than thinner ones they will obviously give better service. 
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Offline Patrick NC

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Re: Should I go with a wider blade ?
« Reply #13 on: April 10, 2021, 10:10:55 AM »
I tried some 1.5" standard 7 bands on my 23hp mill and didn't see enough difference over the 1.25" standard 7s to justify the extra cost. Both were 0.045.  
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Re: Should I go with a wider blade ?
« Reply #14 on: April 10, 2021, 10:51:40 AM »
I got a couple of 1"X.045 Turbos to try but I have not had/taken the time to do it.  ::)
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Re: Should I go with a wider blade ?
« Reply #15 on: April 14, 2021, 09:37:23 AM »
To add to what Longtime Lurker said one of the main reasons you can get more bd.ft. with the wider blade is exactly because you can push that blade faster through the log and still saw straight and the faster you go the less time that blade is spinning in wood which is always causing it to dull. 
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