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Author Topic: Reverse Roll Quarter Sawing  (Read 11750 times)

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Offline Lud

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Re: Reverse Roll Quarter Sawing
« Reply #20 on: December 28, 2016, 10:24:56 am »
I've had some success quarter sawing but will try your technique next time. 
Well Done! 8)
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Offline WDH

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Re: Reverse Roll Quarter Sawing
« Reply #21 on: December 28, 2016, 04:10:36 pm »
Robert,

You have a lucky horseshoe hidden somewhere on your Farm  :-*
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Offline Brad_bb

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Re: Reverse Roll Quarter Sawing
« Reply #22 on: December 28, 2016, 04:17:26 pm »
Very nice.  I'll have to stop by Woodmizer and look at clamping systems.  I have an LT15go and just have conventional clamps.  Boy If I could automate more it would be nice.  I wish they offered more options on the LT15 so you could upgrade as you can afford it.  I have to have the LT15 because I have the MP100 beam planer which requires a 2 rail mill.  Since that is the case, I think they should offer a lot more upgrade options.
Anything someone can design, I can sure figure out how to fix!
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Offline POSTONLT40HD

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Re: Reverse Roll Quarter Sawing
« Reply #23 on: December 28, 2016, 04:47:12 pm »
Robert,

You have a lucky horseshoe hidden somewhere on your Farm  :-*.

What about yours?  :D :D :D
I'm thinking......

Offline Kbeitz

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Re: Reverse Roll Quarter Sawing
« Reply #24 on: December 28, 2016, 06:01:17 pm »
Very nice.  I'll have to stop by Woodmizer and look at clamping systems.  I have an LT15go and just have conventional clamps.  Boy If I could automate more it would be nice.  I wish they offered more options on the LT15 so you could upgrade as you can afford it.  I have to have the LT15 because I have the MP100 beam planer which requires a 2 rail mill.  Since that is the case, I think they should offer a lot more upgrade options.

They do have a big options upgrade for your mill. The part number is LT28.
Very easy to do. You have someone unscrew the fuel cap and hold ir about 6"
above the tank while someone pulls the mill out from under it. Then you back
the new part (LT28) under the cap and help screw it back on. You will be surprised
how much difference it makes. I think there is other options to.
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Offline Magicman

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Re: Reverse Roll Quarter Sawing
« Reply #25 on: December 28, 2016, 07:18:37 pm »
  The log half is not really clamped, it is really just stabilized.  It takes a little while to trust that the log half won't move when sawing, but its rare for it to happen.   

Very nice.  I'll have to stop by Woodmizer and look at clamping systems.  I have an LT15go and just have conventional clamps. 

Notice what Robert said about clamping in the OP.  Those log halves are heavy.  You are not actually clamping it, you are stabilizing it.
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Offline Peter Drouin

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Re: Reverse Roll Quarter Sawing
« Reply #26 on: December 29, 2016, 06:27:16 am »
 
  At the end of the day, the highly figured boards are sold, and the only thing left is the plain boards.  So these eventually go on the lower priced stacks and we lose $2 per bdft between what I paid for the logs and what our sales price is.


(Image hidden from quote, click to view.)

(Image hidden from quote, click to view.)




What::) I think you're paying too much for some logs. :new_year:
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Offline terrifictimbersllc

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Re: Reverse Roll Quarter Sawing
« Reply #27 on: December 29, 2016, 08:56:28 am »
Thanks for this writeup. I'll try it next time.  First Bibby the log, then (Yellow)Hammer it! :D :D :D

I usually have 3 pieces on the loading arms trying to keep them there or one on the ground too.   And forgetting which face to cut off of one or more of them by the time it comes back onto the mill.

This method seems to:
-neatly organizes the quarter sawing both mentally and in material handling.   Organization helps efficiency and is always good for business.
-do the best for each piece of QS lumber that is in the log
-replace time spent getting a big half vertical, and handling other pieces, with time where the blade is in the wood.


 
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Offline YellowHammer

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Re: Reverse Roll Quarter Sawing
« Reply #28 on: December 29, 2016, 09:27:04 am »
What::) I think you're paying too much for some logs.

I always think I pay too much for logs!  I just can't convince the loggers that.  However, at just our retail selling price difference of FAS white oak vs QS white oak, it's a difference of $1.50 per Bdft lost if a board doesn't have fleck. 

TerrificTimber
I agree, juggling log quarters is very frustrating and time consuming, and this eliminates that.  The bigger the log, the bigger the pain juggling quarters.  Generally, the only time the log half has to be hand touched would be the second log half, depending on how it lands when it comes off the bottom half, it may have to be flipped over to get the round side down on the bed rails.  Sometime the two plane will do it, sometimes not.  So if it lands wrong side down, then, with the log half on the loader arms, back the two plane into the left side of the log, as outboard as possible, maybe a couple inches up, and raise the loader arms.  The log half will hang on the back of the two plane, and if it doesn't trip and fall over when I raise the loader arms, then I use a logrite to grab the top of the half and nudge it past it's balance point and trip it over on the bed.  Make sure the backstops are all the way up or she will go over the other side of the mill.   
I have a grapple on my tractor I can use to physically remove the top log half if I want, but its just one more thing to do, and tripping it with the two plane while it's on the mill works fine. 

Of course the chain turner guys just have to flick a couple levers....
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Offline flatrock58

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Re: Reverse Roll Quarter Sawing
« Reply #29 on: December 29, 2016, 11:13:50 am »
Perfect timing YH.  I have a large red oak I need to cut and try this method. 
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Offline WDH

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Re: Reverse Roll Quarter Sawing
« Reply #30 on: December 29, 2016, 08:13:11 pm »
Of course the chain turner guys just have to flick a couple levers....

Sometimes, those guys can get an attitude  :) ;D
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Offline 4x4American

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Re: Reverse Roll Quarter Sawing
« Reply #31 on: December 29, 2016, 11:01:37 pm »
Of course the chain turner guys just have to flick a couple levers....

Sometimes, those guys can get an attitude  :) ;D .


These frozen logs that are covered in ice (and mud) can be a bear to turn with the claw/clamp sometimes...sometimes I wonder how hard it would be to put a chain turner on there, and other times I want to drag the 40 super to WM and trade it in on a 70 super  ;D


But then I figure I'll let them get all the bugs worked out of them before I go and do something like that
Boy, back in my day..

Offline Kbeitz

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Re: Reverse Roll Quarter Sawing
« Reply #32 on: December 30, 2016, 09:19:14 am »
Around 20 years ago I picked up a new hydraulic chain turner for a saw mill
at our local junkyard. At the time I did not even know what it was. I only
got it for the hoses and the hydraulic motor that was on it. So it has been
sitting out in the weather all this time. Maybe its time to do something with it.
This was in new condition when I found it. I'm not sure that I have room to
mount this unit under my small mill.

 

 

 

 

 

 
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Offline Peter Drouin

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Re: Reverse Roll Quarter Sawing
« Reply #33 on: December 30, 2016, 08:35:12 pm »
I can't believe someone through that way!! Kbeitz
2008 LT40 super,2008 edger, Cat telahandler, JD 5410 And can cut up to 45' long
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Offline Magicman

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Re: Reverse Roll Quarter Sawing
« Reply #34 on: December 30, 2016, 10:32:41 pm »
It could have been from a stolen sawmill and they carried it to the scrapyard a piece at the time.   :-\
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Offline YellowHammer

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Re: Reverse Roll Quarter Sawing
« Reply #35 on: December 31, 2016, 12:08:42 am »
Kbietz, what an excellent find.  Looks pretty beefy.

I was working on some oversized red oak quarters today, and took a few more photos.  This is more of typical conventional quartersawing, and I wasn't really reverse rolling, just doing what I could to get them up in the mill and sawn.  This log was quartered for me with a chainsaw as a present by someone else and weren't halves.  However, I wasn't complaining, they were as big as my mill would take.
 
These big guys were difficult to maneuver, and my two plane would barely lift them.  However, with a little bit of wrestling, I got the first quarter in position, and didn't push it over the back side.   

Here is a picture of it rotated so that the growth rings are perpendicular the the band.  The log clamping look precarious, but it's steady. The first wedge has been cut.


I was not real happy with the figure, so did some grain prospecting.  Basically, I'll make slight adjustments, and in this case raised the rear toe board some, and rotated a few more degrees.  Then I took a shallow skim pass and found the fleck.   
In the picture below, the right board is the wedge cut with minimal fleck that I wasn't happy with, the left board is the thin prospecting cut with fleck.  The fleck still wasn't that great, but better than what was in the wedge cut.  I didn't have to change the angle much to see better results.  This is one advantage of taking the first cut off the narrow top, it's easy to search for and find the fleck without wasting a wide board.

 


Once the fleck is found, then start at the top and work down as far as the mill will go on on the perpendicular rings.  Then do some more rotations and keep whittling.
 


The cant was so big the left side of the log was brushing the inboard rollers, almost hitting the upright, and the right side was almost touching the outboard side.  Max mill capacity on QS boards, big boards, 26 inch or so across coming off. 





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Offline Kbeitz

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Re: Reverse Roll Quarter Sawing
« Reply #36 on: December 31, 2016, 12:13:34 am »
I can't believe someone through that way!! Kbeitz
About one a month I find something as good as that to bring home
from that same yard.
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Offline Peter Drouin

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Re: Reverse Roll Quarter Sawing
« Reply #37 on: December 31, 2016, 06:06:26 am »
Well, It must be you and maybe 2 other guys are picking.
Here you have to be lucky I have 50 guys picking. I do find a lot too.

YH, good job, That's big wood :o I have been doing that too, Near the end of it I sometimes flip the thing so my dog board is 5/4 sawn too.
 :new_year:
2008 LT40 super,2008 edger, Cat telahandler, JD 5410 And can cut up to 45' long
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Offline terrifictimbersllc

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Re: Reverse Roll Quarter Sawing
« Reply #38 on: January 01, 2017, 07:57:31 am »
Should I move?  I can't pick at my dump.  :-[
DJ Hoover, Terrific Timbers LLC,  Mystic CT   2001 WM LT40SHDD (42HP Kubota, Accuset2, FAO's, Lubemizer, debarker, hydraulics everywhere), Peterson WPF 10-30 with chain slabber. LogRite fetching arch, WM BMS250 sharpener/BMT250 setter.

Offline Kbeitz

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Re: Reverse Roll Quarter Sawing
« Reply #39 on: January 01, 2017, 10:00:12 am »
I would show some of the stuff I found but this is getting off topic.
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