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Author Topic: Sawing feed rate...  (Read 2658 times)

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Offline grweldon

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Sawing feed rate...
« on: September 09, 2013, 12:50:07 PM »
Would the feedrate shown in this video be typical for cherry?  What about other softwoods.  When I'm sawing SYP, my feedrate is about half of that max!


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Offline Dave Shepard

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Re: Sawing feed rate...
« Reply #1 on: September 09, 2013, 12:55:11 PM »
For a log that nice, I'd say he could step it up a notch. Or two. :D Good cherry saws great. 8) If it was an upper log, then I'd say that is about right for fresh cherry. You can zip right along in clear oak and white pine like that as well.
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Offline Peter Drouin

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Re: Sawing feed rate...
« Reply #2 on: September 09, 2013, 12:58:15 PM »
You can only go as fast as the horse power you have will let you go :)
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Offline Dave Shepard

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Re: Sawing feed rate...
« Reply #3 on: September 09, 2013, 01:00:47 PM »
I think that 25HP electric is enough. Al probably just doesn't want to run to keep up. ;D
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Offline ladylake

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Re: Sawing feed rate...
« Reply #4 on: September 09, 2013, 01:05:27 PM »
  GR are you running out of power or not cutting straight if you feed too fast,  keep in mind that's a 25hp electric equal to 50 hp gas and most likely running a wider blade..  Cherry saws easy, if you want to compare feed rates compare a mill with the same hp and blade you have .. Those Select cut mills on another thread would put AL and Lindas WM to shame but we need to compare apples to apples . Steve
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Offline drobertson

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Re: Sawing feed rate...
« Reply #5 on: September 09, 2013, 01:18:30 PM »
I would say absolutely,  and buy the looks of the blades, unless I'm mistaking, (usually) they look like 1-1/2" 
I will say that the electric has allot of power, and coupled with the wider blade, lots of production.  I like their set up,  plus what could be better than sawing with your wife? (provided you get along ;D)     david
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,

Online Chuck White

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Re: Sawing feed rate...
« Reply #6 on: September 09, 2013, 01:30:43 PM »
Most of it is faster than I saw, but at about 5.15 into the video is about the same speed that I saw Cherry that size!

I have an LT40HDG24 mill!

Nice setup you have there!
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Offline schmism

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Re: Sawing feed rate...
« Reply #7 on: September 09, 2013, 01:31:40 PM »
Its my understanding from the years of reading here, that you can change your blade to one that was suited for SYP vs other hardwoods and achieve higher feedrates.  (but i cant recall the details exactly)
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Offline Bibbyman

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Re: Sawing feed rate...
« Reply #8 on: September 09, 2013, 01:36:47 PM »
Watching Linda fly around pulling flinches,  edging and stacking has worn me out. I need a nap now.

That's ElectricAl on the mill.  We can figure out the specifics but I think he normally runs the 1-1/4" x .045 Wood-Mizer DoubleHard blade.
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Offline grweldon

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Re: Sawing feed rate...
« Reply #9 on: September 09, 2013, 03:45:39 PM »
  GR are you running out of power or not cutting straight if you feed too fast,  keep in mind that's a 25hp electric equal to 50 hp gas and most likely running a wider blade..  Cherry saws easy, if you want to compare feed rates compare a mill with the same hp and blade you have .. Those Select cut mills on another thread would put AL and Lindas WM to shame but we need to compare apples to apples . Steve

Steve, right now I'm doing neither.  The mill cuts SYP quite well using a 10 deg. blade at about 10-12' per minute.  I have a 25HP gas Kohler. Since I'm using the lumber that I'm milling and I need every piece, I guess I have just been a little hesitant to push it.  I suspect that I'll get wavy lumber before I run out of power at least in pine.

 That LT50 seems to be doing about 60-70' per minute feedrate.  I understand it may be up to twice as powerful as mine, but wouldn't that mean I should be able to cut quite a bit faster, say 25-30 feet per minute?  I know, it all depends on conditions and every log isn't created equal.  I guess I should measure the feedrate, then push it and see what it can get away with.  Of course I've never milled any hardwood except pecan (smiley_devil wood) and that wasn't fun.  Maybe 4' per minute, but that was my first experience milling and I haven't done any since.

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Offline drobertson

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Re: Sawing feed rate...
« Reply #10 on: September 09, 2013, 04:29:54 PM »
Not sure on the drive portion of your mill, or your power supply, but will say if you are happy with the quality then this is really all that matters for now.  If in fact you do want more feed speed, I would suggest two things, drive transmission (no slipping of the drive mechanism, belt or otherwise)  and a bonified  blade alignment, (not saying yours is out, obviously not) so, go for it, as much as possible.  A good lube/cleaner for the blade, and let it rip, you might very well be surprised.  You can always take a break if need be,  I have found the faster the cut the less dust to knock off,   david
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 POSTON WIDEHEAD

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Re: Sawing feed rate...
« Reply #11 on: September 09, 2013, 06:30:58 PM »
This was a nice set up this sawyer had. I did notice he didn't have the door/shield on the side of his blade wheel.
Could be a little dangerous. Just trying to figure out why he has it off while milling.  say_what
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Offline thecfarm

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Re: Sawing feed rate...
« Reply #12 on: September 09, 2013, 07:18:46 PM »
Al can go as fast as he wants,but Linda can't go much faster.   ;D  I feel sorry for her.
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Offline Dan_Shade

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Re: Sawing feed rate...
« Reply #13 on: September 09, 2013, 09:03:07 PM »
she's keeping busy!

I try to run my band as hard as I can.  the "rim speed" of your saw makes a difference too.  I understand that the woodmizer "super" series has a different diameter drive pulley which makes the band run at more linear feet per minute than the regular series. 

crank her hard and see what she does. 
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Offline ElectricAl

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Re: Sawing feed rate...
« Reply #14 on: September 09, 2013, 09:49:27 PM »
I'll address PostonLT40HD question first.  ...Ready, I forgot the door. We changed blades and doors are my responsibility. I knew the door was missing on the first cut because the dust really flies.
But Linda was making a video, so I kept going.

TheCFarm is right. There is a happy balance between sawing and edging. 

Dave Shapard, I'll have to run when we saw fresh Basswood.  We make a special blade for that. 15 degree and a 30 thou set.  The old LT40HDE15 would saw 14" wide @ 100' per minute.
That is full speed forward on that saw.  Knot free of coarse.

BibbyMan know our blade of choice. We stock 7, 9, and 10 degree.

grweldon,
For Pine we use a 7 degree to handle the hard knots and push the set out to 30 thou.
Experiment with your blades. Change one thing at a time. Start with more set.
Also make sure the drive belt is set right.  Go to YouTube and search for "  Wood-Mizer Belt Tension Tutorial "  I realize it's the wrong brand of machine, but you'll get the point.
If you don't see any improvement call WM and order some blades that will fit your machine.
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Online YellowHammer

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Re: Sawing feed rate...
« Reply #15 on: September 09, 2013, 11:24:42 PM »


  I suspect that I'll get wavy lumber before I run out of power at least in pine.


I'm one of those guys who likes to saw fast.  I could give you lots of reasons, but mainly its just plain fun to hear the engine growl and my off bearers complain :D

I had a great opportunity to learn a few tricks on speed sawing from a WoodMizer Shootout Sawyer fresh from completion, on my saw.  I was "complaining" to him that I thought my saw would cut faster, and I wished I had bought a bigger mill.  He just smiled and smoked through a couple logs so fast that it was hard to describe.  Incredibly fast, probably twice as fast as I had been going. 

After I could speak again, he explained several tricks to me, including to look for the rooster tail of sawdust coming off the blade as it exits the log.  The sawdust rooster tail basically creates an indicator, like a needle on a dial, and when the rooster tail is constant and level, the blade is cutting straight and flat.  When the rooster tail needle twitches up or down, then the blade is rising or dipping in the log.  So you can maximize your speed by pushing your engine and slowing down when the rooster tail rises or falls,  indicates a wavy cut is happening.  This way you get instant feedback if you a getting a wavy cut and won't ruin a board. 
It takes practice, but it works.
YH

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Offline Linda

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Re: Sawing feed rate...
« Reply #16 on: September 09, 2013, 11:31:08 PM »
ElectricAl loves to push the saw to it's maximum potential. It's a game he plays, trying to bury me; Which just makes me go faster.  ;) ;D

Fortunately for me, this video was made a year ago, when the sawmill was still pretty new, so he might have been able to push it a little harder before getting a wavy board.

Bib, sorry for wearing you out again!  ;)

Cfarm, I love the challenge of keeping up, but if you watch some of my other videos, you'll notice I have my crew along to take some of the burden off.  :) AND to keep ElectricAl from being able to bury me!  :D
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Offline Dave Shepard

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Re: Sawing feed rate...
« Reply #17 on: September 10, 2013, 12:16:44 PM »
Both the standard and super use 19" wheels. The 70 and up use either 24" or 25" wheels.
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