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Waste on a 20" cant

Started by woodweasel, August 15, 2017, 07:44:15 PM

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woodweasel

Please settle a argument. If one has a perfect 20" round cant. Whats the approx max width board it will produce ::)

Ljohnsaw

If you were doing a 2" board with the pith centered, I'd say about 19 to 19.5" (depends on the bark).  But don't you mean a round LOG.  A cant is a log that's been squared up, right? ;)
John Sawicky

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drobertson

a cant is not round, that be a log,, check the tool box, and then saw a few,,, sweep and other issues will control the actual square that's obtainable from a 20" log,,
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,

Bandmill Bandit

Is 20" the small end of the log? AND is the log straight?  Is the log perfectly round?

if those answers are yes, yes and yes, then a 16" cant MAY be possible with some wane on the 4 corners, meaning you could end up with a clean 16"X 14" cant, but more likely 14 x 14.

If the tree is slightly oval as are many trees then a 18" X 12" is more probable and it would have  wane as well. 16" X 12" is the more likely result here.
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woodweasel

20" perfectly round log is what I mean. What size CANT can you get out of this?

D6c

Theoretically it would be 14.142"....or a little over 14 1/8".

Pythagorean Theorem A sq + B sq = C sq
square root of (20 squared divided by 2) = 14.142

POSTON WIDEHEAD

Quote from: D6c on August 15, 2017, 08:38:19 PM
Theoretically it would be 14.142"....or a little over 14 1/8".

Pythagorean Theorem A sq + B sq = C sq
square root of (20 squared divided by 2) = 14.142

You beat me to it.  :D :D :D
The older I get I wish my body could Re-Gen.

grouch

Quote from: woodweasel on August 15, 2017, 08:32:42 PM
20" perfectly round log is what I mean. What size CANT can you get out of this?

Well, first you have to make up your mind about whether you can or cant.
Find something to do that interests you.

SlowJoeCrow

Well you certainly CANT get 22 inches...

btulloh

I think he meant 20x20 divide by 2 then take the square root of the result.

Or just multiply by 0.707.  You can just use 2/3 of the diameter for a quick approximation.
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ToddsPoint

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WDH

My rule of thumb is divide the small end diameter of the round log by 1.5.  This gives a fudge factor for logs that are not perfectly round and straight. I have seen very few of those  :).  In this case, it would come out to 13.33" square cant. 
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Brucer

That's kinda the way I do it, only I take 2/3 of the diameter to figure the square cant :D :D.
Bruce    LT40HDG28 bandsaw
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Ron Wenrich

Since you said board, that is a bit different than a cant.  A board would be scant 20" with the board perfectly centered.  As you increase the thickness, the maximum width decreases.  At an 8" thickness, you can get an 18" wide piece.   A square 14x14 can be sawn from a 20" log with no wane.
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