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Author Topic: High Performance Blade Guides?  (Read 2232 times)

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Offline stavebuyer

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High Performance Blade Guides?
« on: October 13, 2014, 03:41:20 AM »
LT70s come from the factory equipped with high performance blade guides. I know I have read some posts where a few LT40 owners didn't see much difference and went back to standard rollers. When the blade gets dull or your push too hard you get waves; upper and lower guide pads don't stop it but do they reduce it?

We just realigned the mill and cut a log without the upper and lower guide blocks. Only difference we noticed was that all the sawdust went out the sawdust tube instead of some being deflected by the upper & lower blocks. One log with a fresh blade isn't much of a test but I am tempted to leave the guide blocks off and see if we notice any change.  Any LT70 owners run without the guide blocks?

Offline slider

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Re: High Performance Blade Guides?
« Reply #1 on: October 13, 2014, 06:29:09 AM »
I run mine all the time but I am guilty of not keeping them adjusted like I s for the remindernkshould.Tham



















































I am guilty of not keeping mine adjusted properly ,the pads I mean .Thanks for the reminder.






 


al glenn

Offline Chuck White

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Re: High Performance Blade Guides?
« Reply #2 on: October 13, 2014, 06:35:02 AM »
There were HP Blade Guides on my mill when I first got it, but sometimes I needed a little extra clearance between the blade and the bed and the lower part of the HP BG interfered.

I took them off and installed standard BG's.  8)

I do think that if they're installed and adjusted properly, that they can produce a cut that has less waves than the standard BG's.
~Chuck~
Retired USAF 1989, Retired School Bus Driver 2012, now semi-retired Mobile Sawyer
1995 Wood-Mizer LT40HDG25 Kohler - Shingle & LapSider, Cooks Cat Claw Sharpener and single-tooth setter, 4-foot Logrite cant hook.
Basic mechanical skills are all that's required to maintain a Wood-Mizer

Offline backwoods sawyer

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Re: High Performance Blade Guides?
« Reply #3 on: October 13, 2014, 03:14:34 PM »
I up graded the movable side to the hp bg with no big difference.
I adjust when I notice a gap forming.

But on the drive side the style of bg on my mill does not have a chip deflector and not having a chip deflector allows build up between the saw and the wheel.

Recently I added a Cooks lube system with a deisel wick. It sits on the saw where the hp bg would be. It tends to send sawdust spraying but has solved the build up on the wheel issue.
 
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Offline POSTON WIDEHEAD

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Re: High Performance Blade Guides?
« Reply #4 on: October 13, 2014, 03:34:52 PM »
I have the HP blade guides on my mill. If my blade hits metal and decides to extremely rise or fall in the blink of an eye…..the extra blade pressure will be on the guides and not directly on my rollers.
Chuck White had a good point also…..you can get more clearance by removing them.
I prefer to leave mine on…..but I do have an option to take them off if I need to.
The older I get I wish my body could Re-Gen.

Offline Peter Drouin

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Re: High Performance Blade Guides?
« Reply #5 on: October 13, 2014, 08:34:01 PM »
I like mine, but they build up with sawdust.
So I did this.
 

 
When the blade is tight, it's up agents the piece.
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Offline customsawyer

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Re: High Performance Blade Guides?
« Reply #6 on: October 14, 2014, 03:42:29 AM »
I don't use them on my main mill. I didn't notice that much difference and that is that much less time I have to spend adjusting.
Two LT70s and to much other support equipment to mention.
www.thecustomsawyer.com

Offline backwoods sawyer

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Re: High Performance Blade Guides?
« Reply #7 on: October 14, 2014, 12:14:40 PM »
Like Poston said they help slow the dive or rise after the fact.
Backwoods Custom Milling Inc.
100% portable. . Oregons largest portable sawmill service, serving all of Oregon, from our Backwoods to yours..sawing since 1991

Offline Rachiano

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Re: High Performance Blade Guides?
« Reply #8 on: October 14, 2014, 09:33:04 PM »
I removed mine....had a feeling that sometimes the blade was rubbing against them weakening the blades due to heat created. Put more down pressure on the blade.... 1/4 inch or more....pump the tensioning system airbag to 120psi and tension the blade to 130psi....cuts straight if blade is sharp enough.
Rachiano

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Online Magicman

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Re: High Performance Blade Guides?
« Reply #9 on: October 14, 2014, 10:16:27 PM »
I could not tolerate anything that reduced the opening between the blade guides.  I used every bit that I could squeeze today.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

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

Offline stavebuyer

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Re: High Performance Blade Guides?
« Reply #10 on: November 02, 2014, 06:18:52 AM »
We have been running one of the LT70's over two weeks now without them. The crew running the mill was of the opinion that trying to saw without blocks would never work and the mill wouldn't cut straight or fast without them. Since I am the one signing their paychecks ; the guides stayed off anyway. Even the doubters came around and now agree we noticed no difference in production or quality of cut.

Offline petefrom bearswamp

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Re: High Performance Blade Guides?
« Reply #11 on: November 02, 2014, 08:27:45 AM »
Took mine off 3 yrs ago and see no difference in the boards if the blades are sharp and set properly.
LT40SHDD51
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