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Author Topic: Sequence of sawing  (Read 5174 times)

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Offline dean herring

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Re: Sequence of sawing
« Reply #20 on: January 21, 2018, 10:58:54 AM »
MM how do you determine your exact cant target size?
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Offline Magicman

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Re: Sequence of sawing
« Reply #21 on: January 27, 2018, 08:52:03 AM »
Sorry guys but I got a bit behind while spending a week with Jeff at the Cabin:  LINK

To answer the "starting point" question to reach the target and have all of the cants the same size, this is where Accuset 2 would be very handy.  Since I don't have it, I practiced many times to determine my "starting point" and have these points on my cheat sheet.  The actual numbers would be of little value to anyone else but yes Georgia088, you are on the right track.  Use your figures, try it, and then adjust accordingly.  When you find the "magic" point, write it down.  As LeeB pointed out, my old Setworks allows me to input the blade kerf and mine is not exactly 1/8" but is a decimal.
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Offline Darrel

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Re: Sequence of sawing
« Reply #22 on: January 27, 2018, 09:39:54 AM »
So this is what I like about the forestry forum. I didn't even have to ask, in fact I didn't even know that I needed to ask.  But now I know that I should have. I have no setworks other than the rule on my mill and my brain and I know that my cants are a little bit off. I will play with it and figure it out. I'll have to write it down and probably draw a picture of where to stop the head between the lines on the rule. But I can do it.
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Offline Magicman

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Re: Sequence of sawing
« Reply #23 on: January 27, 2018, 02:25:42 PM »
In your situation I would think that you could measure up from the bottom of the log to determine your targets.
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Offline Darrel

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Re: Sequence of sawing
« Reply #24 on: January 27, 2018, 10:23:04 PM »
That's what I do Magicman, but when I get to the last one it would always be a little bit off because I was figuring 1/8" kerf (adding up the thickness of all cants + 1/8 for each). Then when you said that it's a "decimal" something clicked in my little brain and now I know what I need to do. It will probably involve me making my own magnetic scale to put on my mill for when I'm making 3 cants for cutting into 2x4's. But first I have to figure exactly what will work.
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Offline LeeB

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Re: Sequence of sawing
« Reply #25 on: January 27, 2018, 10:36:44 PM »
And when you get it all figured out you have to make sure you stop exactly on the right spot. Not always easy to do even with a set works. They aren't 100% accurate and my eyes don't help me any as I get older.
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Offline Darrel

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Re: Sequence of sawing
« Reply #26 on: January 28, 2018, 12:00:12 AM »
When I first got my mill, I had a hard time getting it to stop exactly where I wanted it. I have learned that if I drop the head a bit low then bump it back up that I'm just as accurate as any setworks. And thankfully at my age I am blessed by being able to read without my glasses. I do need them for distance vision but not close up. My problem is getting my brain to figure out where I need to stop. If I'm trying to make 3 cants 3 5/8" each, I always find that my last one is a bit different then the others. It's like a 1/16 inch thicker. If I'm cutting 3" batons and 5 cants, it gets worse.  I know it's only a 1/16" but it bothers my OCD.  So if I can fix it I will.
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Offline Ga Mtn Man

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Re: Sequence of sawing
« Reply #27 on: January 28, 2018, 09:20:05 AM »
Darrel-  I can't understand why the error on your last cant would be so large (1/16") or why it would be worse when cutting more cants.  Assuming your actual kerf is 0.090, which would be typical for an 0.045 blade, and you are using the mill scale which allows 0.125" for the kerf, each cant, except for the bottom one, should be 0.125 - 0.090 = 0.035 strong, which is a little more than 1/32".  The error at the bottom should be the same regardless of how many drops you are making.  I've never had a customer who minded the extra thickness and if you start a little high on your first cut you can make the bottom one come out a little thick also.  :)     

For five 3" cants:

Blade Hght   Board Thickness

15-1/2
                      3-1/32
12-3/8
                      3-1/32
9-1/4
                      3-1/32
6-1/8
                      3-1/32
3
                      3
0

 

 
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Offline Darrel

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Re: Sequence of sawing
« Reply #28 on: January 28, 2018, 11:54:47 PM »
I don't understand either, but I will figure it out just as soon as winter comes back or the mud dries up. It's still January and the mud should be frozen but it is 6" deep and quite sloppy in my customer's/neighbor's field where my mill is. His logs are staged and ready to saw but it is way too muddy. So anyway, as soon as I can get there I'll figure it out. I've never had anybody complain about it but it does bother me. Chances are if I figure out what I'm doing wrong, I'll either fix it or maybe even choose to live with it but not knowing is a puzzle that I feel the compulsion to figure out.

Thanks for your reply. What you say sounds correct, I'm sure I'm the problem more than my mill. Probably just making some mistake in my figuring.
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Offline dean herring

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Re: Sequence of sawing
« Reply #29 on: January 29, 2018, 07:32:49 PM »
Thanks MM
Last log came out MUCH better
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Offline Magicman

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Re: Sequence of sawing
« Reply #30 on: January 29, 2018, 08:27:07 PM »
I was sawing some 2 3/8Ē stuff today that put a serious wrinkle in my cheat sheet.  Had to make a few ďpractice runsĒ to find my starting height. :-\
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Offline ncsawyer

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Re: Sequence of sawing
« Reply #31 on: January 29, 2018, 09:18:05 PM »
Yes those "weird" sizes can be a little aggravating. 
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Offline PAmizerman

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Re: Sequence of sawing
« Reply #32 on: January 29, 2018, 09:40:36 PM »
Boy reading this thread brings back old memories of my old lt30 manual. Now I'm spoiled with accuset 2
Just punch in the numbers and letter rip.
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Offline Crossroads

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Re: Sequence of sawing
« Reply #33 on: February 04, 2018, 11:55:09 AM »
Iím not sure if this question should be in this thread or a new one, but have decided to just add to the conversation. Anyway, I have a job coming up milling some fir. Most of it is in the 10-12Ē range and the customer wants me to try to squeeze 2-4x6 or 2-4x8í out of each one. Since I canít do that without splitting the pith, should I tell the guy that I can only get one quality 4x with the heart centered? In which case he would end up with a bunch of side wood that heís made it clear he has no interest in.
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Offline Magicman

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Re: Sequence of sawing
« Reply #34 on: February 04, 2018, 09:55:38 PM »
I will have a very similar (actually exact) situation tomorrow with a few logs.  I will get one heart centered 4X6 and discard the rest of the log...no side lumber.  I can bust through the logs without being concerned with waste or edging flitches/boards. 

It's gets down to communication with the customer.  I refuse to saw something that I know full well will be unusable after I am finished and gone.
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Re: Sequence of sawing
« Reply #35 on: February 04, 2018, 10:25:58 PM »
That's sort of like taking the ribs and throwing out the tenderloin. Not that I don't appreciate the dilemma, been sawing through the bycatch from the timberframers for way too long on this job trying to clean the plate. I think I just mixed 3 metaphors  ;D
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Re: Sequence of sawing
« Reply #36 on: February 04, 2018, 10:35:27 PM »
I was afraid thatís what you were going to say, thank you for the conformation. Iíll follow your lead and advise him to go with one quality over 2 questionables.
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Re: Sequence of sawing
« Reply #37 on: February 04, 2018, 10:37:19 PM »
That's sort of like taking the ribs and throwing out the tenderloin. Not that I don't appreciate the dilemma, been sawing through the bycatch from the timberframers for way too long on this job trying to clean the plate. I think I just mixed 3 metaphors  ;D
Mmmm, tenderloins ;)
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Re: Sequence of sawing
« Reply #38 on: February 04, 2018, 10:46:23 PM »
The smaller logs had already been pulled as culls.  If I can bust through them and recover a 4X6 then all is good.  It will be quick and easy with 4 passes for ~$10.
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Re: Sequence of sawing
« Reply #39 on: February 04, 2018, 10:53:17 PM »
Hopefully I can talk him into making 1x out of the sides, even if he sells them.
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