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Author Topic: blades for frozen logs  (Read 2659 times)

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Offline JB Griffin

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blades for frozen logs
« on: January 06, 2017, 09:56:22 am »
At work we are having trouble with frozen logs not sawing too good leaving a hump at the front of the log. We're running a Baker Dominator 50hp 3ph and turbo 7 blades. Anyone think that 4deg blades would help on the frozen logs? We only use 7deg blades as 10deg blades are not fast enough or cut flat enough in hardwood.
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Offline Kbeitz

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Re: blades for frozen logs
« Reply #1 on: January 06, 2017, 10:01:32 am »
Other people have said the dip at the beginning of a cut is from
the gov. of the engine dropping rpm's until it stables out.
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Offline JB Griffin

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Re: blades for frozen logs
« Reply #2 on: January 06, 2017, 10:30:34 am »
With 50hp elec. that drop in rpm is very small.
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Offline Kbeitz

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Re: blades for frozen logs
« Reply #3 on: January 06, 2017, 11:01:28 am »
With 50hp elec. that drop in rpm is very small.

It still might pay to check with an rpm meter.
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Offline derhntr

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Re: blades for frozen logs
« Reply #4 on: January 06, 2017, 11:52:31 am »
My only issue with 4 degree blades is the amount of saw dust left on boards and the below zero temps caused the boards to freeze to the cant. I also had to enter slower to stop the rise on entry.
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Offline Ox

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Re: blades for frozen logs
« Reply #5 on: January 06, 2017, 12:00:27 pm »
Common thought is 4 blades for frozen logs.  I wouldn't know.  When it's cold out I try not to mill.  I try to hibernate.
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Offline Jim_Rogers

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Re: blades for frozen logs
« Reply #6 on: January 06, 2017, 12:04:19 pm »
A hump at the beginning of a cut on the cant side is called "blade push off" as the blade is being pushed off the cant. Usually that is a sign that the blade is dull or that the set is not right for the log type.

But it could be just that the ends are hard and frozen.

I use 4 all the time in the winter.

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Offline ChugiakTinkerer

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Re: blades for frozen logs
« Reply #7 on: January 06, 2017, 01:34:18 pm »
...
I use 4 all the time in the winter.

Jim Rogers

Another vote for 4 blades.  Derek at Kasco set up with a box and they are doing fine on frozen cottonwood.
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Offline Dave Shepard

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Re: blades for frozen logs
« Reply #8 on: January 06, 2017, 01:45:33 pm »
Turbo 7 have worked well for me. Before that, I used 4.
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Offline ladylake

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Re: blades for frozen logs
« Reply #9 on: January 06, 2017, 05:51:37 pm »

  10 rise at the beginning of the cut way worse than 4 in frozen wood.  Steve
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Offline Peter Drouin

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Re: blades for frozen logs
« Reply #10 on: January 06, 2017, 06:03:40 pm »
WM 7x55x1, With the set push out to 30. Flat going in, cutting flat in the middle and leaving cutting flat. ;D
Hardwood and soft.
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Offline drobertson

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Re: blades for frozen logs
« Reply #11 on: January 06, 2017, 06:05:54 pm »
I got that in frozen and half froze logs, mainly when sawing the butt end first though, seems like some blades just do it worse than others, been grinding mine right at 5 degrees and slow the entry a hair, then pour it on, tricky,  bout rather saw froze than half froze,  rather be fishing too!
only have a few chain saws I'm not suppose to use, but will at times, one dog Dolly, pretty good dog, just not sure what for yet,  working on getting the gardening back in order, and kinda thinking on maybe a small bbq bizz,  thinking about it,

Offline Gearbox

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Re: blades for frozen logs
« Reply #12 on: January 06, 2017, 07:05:10 pm »
Where you live I would bet the log is not frozen all the way through . Its got to be down near zero for a while to freeze them through .
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Offline dgdrls

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Re: blades for frozen logs
« Reply #13 on: January 06, 2017, 08:00:43 pm »
 :P...:-X

D

Offline jclvsall

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Re: blades for frozen logs
« Reply #14 on: January 07, 2017, 12:34:54 pm »
We had the same problem with our Baker 3665D this year.  We run .055  2" blades.  We use exclusively WM 7 turbos.  We found they are not liking the frozen chestnut oak at all.  WM doesn't make a 4 degree blade in 2"width so we have been looking elsewhere.

We have been told 4 degree is the way to go.

We recrowned the wheels yesterday and that seemed to make a difference even with the 7 turbo.  I was able to crank the feed speed pretty good.  I only had issues with 2 of the small diameter white oaks. 

It seems those small diameter frozen logs are quite "hard" to get good cuts. 

Brian
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Offline JB Griffin

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Re: blades for frozen logs
« Reply #15 on: January 09, 2017, 08:41:37 pm »
We just got our spare bandwheels back from Baker, got em recrowned and new bearings put in but ain't got em put on yet. I suspect that the recrowned wheels and a alignment wouls do the trick.  Thanks
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Offline JB Griffin

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Re: blades for frozen logs
« Reply #16 on: January 09, 2017, 08:44:03 pm »
Jclvsall, how do the 2" blade work for ya'll?
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Offline jclvsall

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Re: blades for frozen logs
« Reply #17 on: January 10, 2017, 06:28:18 pm »
We love the 2" machine.  It would be hard to ever go back to the 1 1/4 or 1 1/2. 

With a sharp blade and everything tuned good I can run at about 1.5fps. 

I generally don't run that fast unless we are pushing to finish a load.

It took a little experimentation to get it to run well.  The blades didnt want to track well when we first got the machine but we figured it out.

What does your Dominator run?  Do you saw toward yourself or away?

Brian
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well armed lamb contesting the vote.  Ben Franklin

Offline MartyParsons

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Re: blades for frozen logs
« Reply #18 on: January 10, 2017, 07:45:12 pm »
Hello,
   Phone is busy with calls like this. I have found as you have there is something not quite right with the mill. Could be drive belt tension, blade strain or tension. Roller guides worn or bearing tight. Alignment of the mill. ( blade guide arm loose)  When the sawing gets tough ( not sure what word to use here) Frozen, dry, wide and you get the idea.
 Good tip. Have a blade that you know worked well hanging on the wall only use it when you have an issue. If it does not work then look at other areas. Review the maintenance section of your manual. I am sure this is not brand specific.

Anyone can saw nice logs!  ::)
As I have posted before the 7 /39 degree or Turbo blade works very well in the tough cutting woods.   If everything is maintained with the mill it will cut. You must have feed rate of the saw head correct. Sawing with a slow feed rate increases sawdust in the cut and creates wash board and many other issues.
I have slowed down the SFM Surface Feet per Min of the blade in extreme conditions when nothing else worked.

I hope this helps. 

Marty
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Offline JB Griffin

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Re: blades for frozen logs
« Reply #19 on: January 10, 2017, 08:40:24 pm »
Brian we run 1.5 in blades on our Dominator 7deg turbo.  Boss ordered this one set up like a Blue Streak with the saw station at the rear,  to replace the Blue Streak we had. We have had real good luck with these blades, getting 3 sharpenings on average with blade life of 4-6mbf.
2000 LT40HYDD33-RA, '70's era 2500 MF 6000lb A/T forklit, '92 F-250 7.3 idi 4x4, '96 F-250 7.3 PSD 4x4, 350 Husky