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Wild Blade Break

Started by Magicman, September 22, 2016, 08:34:43 PM

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Magicman

The great majority of blades finally break ending their life with a surprising Pop but imagine my surprise when I encountered this:


 


 


 
Yup, it penetrated the metal chute as well as the downspout.  :o  I have had them to come out of the downspout before but I guess that this one wanted the quick way out.

The center guard finger was taken out by a runaway broken blade many moons ago.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

jmouton

hey magicman ,, we had almost the same thing happen the other day,  scared the beejesus  out of us bent two of the finger s in there, it was a pain to get it out,ours got a little twisted  , yours look s easy , good thing you werent standing there,


                                                                                                              jim
lt-40 wide ,,bobcat,sterling tandem flatbed log truck,10 ton trailer, stihl 075,041,029,066,and a 2017 f-350,oh and an edger

Chuck White

That's quite a departure, Lynn.   :o

I've had them come out the chute and the sawdust hose, but never out through the metal housing!

~Chuck~  Cooks Cat Claw sharpener and single tooth setter.  2018 Chevy Silverado and 2021 Subaru Ascent.
With basic mechanical skills and the ability to read you can maintain a Woodmizer  LT40!

4x4American

Just sticking it's tongue out, thats all  horn_smiley
Boy, back in my day..

GDinMaine

Perhaps the metal has been worn thin by thousands-of-gallons of high-velocity sawdust? In any case that looks like it could be bad for one's health.
It's the going that counts not the distance!

WM LT-40HD-D42

Ga Mtn Man

That is vivid reminder of the reason to keep people away from that side of the mill.  Wow.
"If the women don't find you handsome they should at least find you handy." - Red Green


2012 LT40HDG29 with "Superized" hydraulics,  2 LogRite cant hooks, home-built log arch.

ncsawyer

That could have been bad if someone were standing there.  Better not let your insurance man see that...it might make your premium go up.
2015 Wood-Mizer LT40DD35
Woodmaster 718 planer
Ford 445 Skip Loader

YellowHammer

Wow.  It must have been a Woodmizer Turbo blade, I hear they will cut through anything. ;D
YellowHammerisms:

Take steps to save steps.

If it won't roll, its not a log; it's still a tree.  Sawmills cut logs, not trees.

Kiln drying wood: When the cookies are burned, they're burned, and you can't fix them.

Sawing is fun for the first couple million boards.

Be smarter than the sawdust

4x4American

Quote from: YellowHammer on September 22, 2016, 11:48:16 PM
Wow.  It must have been a Woodmizer Turbo blade, I hear they will cut through anything. ;D




X2, them blades will even cut through petrified cheese with ease.







Boy, back in my day..

Peter Drouin

With a faster feed rate that will not happen. The blade will get stuck in the log.If the blade brakes not in the log then I guess anything can happen.
I have never had a blade come out like that.
MM you should get a lottery ticket . :D :D :D
A&P saw Mill LLC.
45' of Wood Mizer, cutting since 1987.
License NH softwood grader.

Chuck White

That's right Peter!

If you're "in the log", the blade won't exit!

That's when you get the wedges out to remove the blade!

That's one of the reasons I disengage the blade as soon as it exits the log!
~Chuck~  Cooks Cat Claw sharpener and single tooth setter.  2018 Chevy Silverado and 2021 Subaru Ascent.
With basic mechanical skills and the ability to read you can maintain a Woodmizer  LT40!

fishfighter

MM, you know better then cutting metal. I think it's toast. :D

Magicman

This break happened as I just beginning the opening face on an ERC log.  There was hardly any log resistance to stop the blade's motion.  Yup, there are always hidden dangers in our sawing business.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

derhntr

Been lucky have never broken a blade. I have only used new blades from WM. Got a pile to get sharpened some day. 
2006 Woodmizer LT40HDG28 with command control (I hate walking in sawdust)
US Army National Guard (RET) SFC

Percy

Oh my! That is interesting. Ive heard the dreaded zing-zing-zing and had the band break just as I exited the cut a few times and it was wild but this(MM's pics) is a new development. Specially for those who choose to ride the sawdust chute during a cut ;D
GOLDEN RULE : The guy with the gold, makes the rules.

Magicman

 

 
I have had a broken blade to exit the sawdust chute several times and I had one to break into three (3) different pieces and one short piece landed beyond the log loader.  They generally just curl up and make a mess.   :-\ :-\

During recent jobs I have had probably 5-6 to break.  It's just the way it is and some of my 10's have had several ReSharps.  No big deal because they had earned their keep.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

Percy

I'm a bit of a prema Donna when it comes to blades. I run them a box of 10 at a time cycling all ten evenly. When the third one of a particular box breaks, I start a new box and save the seven leftovers for crappy dirty logs or tramp
Metal logs. After a while I have a lot of old blades and purge at the scrapyard about once a year.
GOLDEN RULE : The guy with the gold, makes the rules.

Magicman

I have somewhere in the neighborhood of 60-75 blades in circulation.  One box of 10 is in route from ReSharp and I have another box ready to go.  Mostly 10° but as blades are rejected by ReSharp they are being replaced with Turbos.

As blades break I am not replacing them and am gradually reducing my blade stash back to ~40.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

Peter Drouin

This is what I get when one breaks.


 
See how it went down in the bed. I don't have a blade guard, I enter the log at cutting speed.



Then use a wage and a big hammer. :D :D


 
Backs out easier that way.
A&P saw Mill LLC.
45' of Wood Mizer, cutting since 1987.
License NH softwood grader.

4x4American

Quote from: Percy on September 23, 2016, 03:50:50 PM
I'm a bit of a prema Donna when it comes to blades. I run them a box of 10 at a time cycling all ten evenly. When the third one of a particular box breaks, I start a new box and save the seven leftovers for crappy dirty logs or tramp
Metal logs. After a while I have a lot of old blades and purge at the scrapyard about once a year.


Seems like a good system.  I may have a lot of pine sawing coming up, and have been planning to get a box of 13° blades to try out. 





Boy, back in my day..

killamplanes

Interesting topic. I had my blower go down this week so I was just shooting dust on the ground. I have done this several times in the past. I feel that atleast with my setup I get less blade life without the blower scavenging the sawdust. It seems to circulate in the safety shield. So I made a test this week leaving the drive side shield off, letting the dust excape wherever. And I had excellent blade life compared to having sheild with no blower attached. Short story long I was nervous all week of blade breakage because who knows were that blade would go. I wouldn't get near it while running.
jd440 skidder, western star w/grapple,tk B-20 hyd, electric, stihl660,and 2X661. and other support Equipment, pallet manufacturing line

Magicman

I have seen some jumbled messes that were contained by the covers.  No matter what, I would never saw without covers and chance a broken blade.  I would rather fight a wildcat barehanded.   :o
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

killamplanes

I agree that's why blower parts  come back in.  I was always nervous someone would come up to mill while it was running and about that time snap.  That's how my luck rolls. Though I saw myself, but others don't realize the dangers. And I do get the occasional visiter.
jd440 skidder, western star w/grapple,tk B-20 hyd, electric, stihl660,and 2X661. and other support Equipment, pallet manufacturing line

killamplanes

But alot of those smaller tired mills and manual ones I see pictures of don't have safety shields, or maybe removed in pictures
jd440 skidder, western star w/grapple,tk B-20 hyd, electric, stihl660,and 2X661. and other support Equipment, pallet manufacturing line

Magicman

I have seen pictures of many home-built sawmills that do not have guards.  I have also seen pictures of folks doing other foolish/dangerous things too.   :o
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

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