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Author Topic: Sawing Tapered Posts  (Read 1940 times)

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Offline highleadtimber16

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Sawing Tapered Posts
« on: August 05, 2017, 01:15:43 AM »
I've been asked to saw tapered 12x12 posts, fir or cedar. 12x12 down to 9x9. Wondering what the most efficient and accurate way to do this is? Use a wedge or the toe board? I've done beams with an angled top but never tapered posts.  :)
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Offline terrifictimbersllc

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Re: Sawing Tapered Posts
« Reply #1 on: August 05, 2017, 05:59:37 AM »
For reproducibility I'd use a block to elevate one end.  I'd make a diagram for each cut.  I guess there are only really 2 cuts to plan out.   Also pay attention to how you keep  it square.
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Offline btulloh

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Re: Sawing Tapered Posts
« Reply #2 on: August 05, 2017, 08:45:54 AM »
It goes without saying, but just in case I'll say it:  Cuts 3 and 4 need shims twice the height as the shims for cuts 1 and 2.

Offline 69bronco

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Re: Sawing Tapered Posts
« Reply #3 on: August 05, 2017, 01:02:30 PM »
Plus kerf ;D
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Offline 4x4American

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Re: Sawing Tapered Posts
« Reply #4 on: August 05, 2017, 06:52:59 PM »
Minus wane
Boy, back in my day..

Offline Ga Mtn Man

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Re: Sawing Tapered Posts
« Reply #5 on: August 05, 2017, 08:08:53 PM »
Who's Wane and why does he get left out?  ???
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Offline killamplanes

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Re: Sawing Tapered Posts
« Reply #6 on: August 05, 2017, 08:42:01 PM »
 :D :D :D
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Offline 4x4American

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Re: Sawing Tapered Posts
« Reply #7 on: August 05, 2017, 09:32:46 PM »
Who's Wane and why does he get left out?  ???


He acted up and now is in the woodshed.  A somber day.
Boy, back in my day..

Offline LeeB

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Re: Sawing Tapered Posts
« Reply #8 on: August 06, 2017, 12:24:58 PM »
Is the woodshed where you go to somber up when you had too much purple drank?
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Offline 69bronco

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Re: Sawing Tapered Posts
« Reply #9 on: August 06, 2017, 03:26:30 PM »
Never had much use for Wayne anyhow :)
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Offline btulloh

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Re: Sawing Tapered Posts
« Reply #10 on: August 06, 2017, 03:32:30 PM »
It never takes too long for a serious topic to end up at the comedy club.   :D :D
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Offline rasman57

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Re: Sawing Tapered Posts
« Reply #11 on: August 06, 2017, 04:39:09 PM »
So Wayne....the guy in the sombero started a Comedy Club in his Woodshed and serves Purple Drank.  I was having trouble keeping up but now understand.

Offline Darrel

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Re: Sawing Tapered Posts
« Reply #12 on: August 06, 2017, 10:20:55 PM »
. . . . . but I walk away to the woodshed shaking my head.
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Offline John S

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Re: Sawing Tapered Posts
« Reply #13 on: August 07, 2017, 06:59:54 AM »
Wane is in his own World!
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Offline dsgsr

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Re: Sawing Tapered Posts
« Reply #14 on: August 07, 2017, 05:37:56 PM »
All joking aside Folks, I've never done this. I'm not to smart when it comes to milling so how would this be done. I would envision marking out the ends of the log and shimming to get that cut.  But how do you know it's going to make the cut?

I'm pretty good at making things come out different than intended:)

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Offline Magicman

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Re: Sawing Tapered Posts
« Reply #15 on: August 07, 2017, 06:14:17 PM »
Look at your starting height.  Raise the head and travel to the other end and lower the head to the starting height.  That will show you what the finished cut will look like. 
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Offline grouch

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Re: Sawing Tapered Posts
« Reply #16 on: August 07, 2017, 06:52:42 PM »
Hope I'm not screwing this up in my head.  ;D

Get the pith level then prop the small end up 1-1/2 more inches (12 - 9) / 2 = 1.5. Cut 6 inches above the pith on the big end.

Rotate 90 and repeat.

Rotate 90 and prop the small end up 3 inches; cut for 12 inches at the big end.

Rotate 90 and repeat.

Make sense?
Find something to do that interests you.

Offline btulloh

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Re: Sawing Tapered Posts
« Reply #17 on: August 07, 2017, 07:24:54 PM »
What Grouch and Magicman said.  If you're tapering from end to end, Be sure the end that stays on the bunk is the pivot point.  If your bunk supporting the lower end is not at the end of the log, you'll get a taper between the raised end and the point where the log is sitting on the bunk.  The rest of the log, from the bunk to the far end will be straight.  You may need to support the far end of the log with a board between two bunks to make it work.  If so, add the thickness of the board to the shims you're raising small end with.

To be safe, I'd cut one for practice just to get the feel of it.  It's a lot like cutting tapers on table legs on the table saw, but with this the saw is moving and not the work.
HM126

Offline btulloh

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Re: Sawing Tapered Posts
« Reply #18 on: August 07, 2017, 07:25:52 PM »
Another thing that probably goes without saying:  Make a regular cant first and then taper it.
HM126

Offline Kbeitz

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Re: Sawing Tapered Posts
« Reply #19 on: August 07, 2017, 07:41:10 PM »
I have another way. I made a lathe attachment for my mill.
I just put the log on the lathe and raise the tailstock.
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Offline 4x4American

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Re: Sawing Tapered Posts
« Reply #20 on: August 07, 2017, 08:00:03 PM »
I have another way. I made a lathe attachment for my mill.
I just put the log on the lathe and raise the tailstock.


Pics or it didn't happen!
Boy, back in my day..

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Re: Sawing Tapered Posts
« Reply #21 on: August 07, 2017, 08:59:42 PM »
I have another way. I made a lathe attachment for my mill.
I just put the log on the lathe and raise the tailstock.


Pics or it didn't happen!

He's shown pics; it did happen. :)

Ain't you ever heard of puttin' the Kbeitz on wood? Makes nice spiral lumber!
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Offline Kbeitz

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Re: Sawing Tapered Posts
« Reply #22 on: August 08, 2017, 01:10:32 AM »
This one is a tapered twisted octagon ...

 

 
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Offline kelLOGg

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Re: Sawing Tapered Posts
« Reply #23 on: August 08, 2017, 05:00:17 AM »
I've got stuff like that I did without a lathe ;D
Seriously, that is some cool cutting. What will it be? a column?
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Offline 69bronco

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Re: Sawing Tapered Posts
« Reply #24 on: August 08, 2017, 07:27:44 AM »
I recently tapered a flagpole on the mill. Its not that hard, make sure the big (far) end is resting on a bunk or board. Mark it so it doesn't vary. Run the sawhead down to exit point and lower till the blade is making contact with exit point. Back up head, raise cant with shim to first cut hgth and let her rip. I had marked the center of cant on small end, measure up from rail to mark. Use that measurement to shim up rest of sides. Don't forget to shim the small end against the stops to keep parallel so your cut comes out square.
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Offline Kbeitz

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Re: Sawing Tapered Posts
« Reply #25 on: August 08, 2017, 10:16:09 AM »
I've got stuff like that I did without a lathe ;D
Seriously, that is some cool cutting. What will it be? a column?

Columns. table legs. porch post... Whatever.
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Offline terrifictimbersllc

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Re: Sawing Tapered Posts
« Reply #26 on: August 08, 2017, 11:29:33 AM »
Could make logs from cants with that thing.
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Offline Kbeitz

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Re: Sawing Tapered Posts
« Reply #27 on: August 08, 2017, 01:51:34 PM »
Collector and builder of many things.
Love machine shop work
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Re: Sawing Tapered Posts
« Reply #28 on: August 08, 2017, 09:34:59 PM »
Kbeitz that twisted timber is farginsaweet!
Boy, back in my day..


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