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Forum topic by steveswoodlandmills posted 12-13-2016 09:07 PM 918 views 0 times favorited 13 replies Add to Favorites Watch
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steveswoodlandmills

5 posts in 366 days


12-13-2016 09:07 PM

Hi Guys,
Been dabbling with woodworking the last year or so. I had a large red oak fall on my lot and after disapointment with a chainsaw mill bought a bandsaw mill. I put an add on CL to see if anyone wanted some custom wood cut up. A guy sent me a message and wanted the following for trailer flooring.

1 3/4×10 1/2”x 11’ (6)
1 3/4×5 1/4×12’ (3)
1 3/4×7 1/4×12’ (2)
1 3/4×7 1/4×8’ (6)
1 3/4×5 1/4×8’ (8)
Using a B/F calculator It came out to around 280 ish. I am charging him 300 dollars for all of the above somewhere around $1.15 per B/F. I am just wondering if I’m low, high or just right. All the wood is green and rough cut (unfinished).

thanks


13 replies so far

View papadan's profile

papadan

3584 posts in 3205 days


#1 posted 12-13-2016 10:35 PM

Being green and rough, your price is just about right. Him ordering specific boards like that, he will come up short for his floor by the time the wood dries and is milled.

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steveswoodlandmills

5 posts in 366 days


#2 posted 12-14-2016 12:45 AM

I think its for and open equipment type, hauler trailer. Probably gonna put it down soon and not finish it. If so don’t think gaps will be a problem.
He was worried about it shrinking in thickness. Said he needed at least 1 1/2 after shrinking. How much do boards shrink in thickness when dry? I don’t think it will shrink a 1/4 inch….I figured 1/8 at most..
Thanks for the reply

View WDHLT15's profile

WDHLT15

1695 posts in 2312 days


#3 posted 12-14-2016 01:13 AM

For the narrower boards, 18/” is about right. The 10” to 12” wide stuff will be closer to 3/16” to 1/4”. Oak has a pretty high shrinkage.

FYI, in the Hardwood Market Report (which reports average sales prices weekly for tractor trailer loads of wood F.O.B sawmill, i.e. shipping and freight not included), FAS (high grade) red oak is selling for $1.25 per bf green. #1 common is about $.80 per bf green. If your trailer boards are a mix of the higher grade and the lower grade, figure an average of say $1.00 per BF. Remember this is wholesale for tractor trailer load minimum quantities. For a more retail situation, I would just about double that. $1.75/bf is fairer to you since it is your logs.

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com

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WDHLT15

1695 posts in 2312 days


#4 posted 12-14-2016 12:44 PM

I meant to type 1/8”.

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com

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steveswoodlandmills

5 posts in 366 days


#5 posted 12-14-2016 02:58 PM

Awesome thanks for the info, I figured you meant 1/8” after reading it a second time.. thanks again

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steveswoodlandmills

5 posts in 366 days


#6 posted 12-14-2016 03:07 PM

WD, so the amount of shrinkage in thickness (1 3/4) correlates to how wide the boards are? I would think that would have to do with the shrinkage in width (10/1/2) ..

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LiveEdge

564 posts in 1457 days


#7 posted 12-14-2016 06:02 PM

Wood database says tangential shrinkage for Red Oak is 4%. For 1 3/4” that is 7/100ths or a little more than 1/16th of an inch.

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WDHLT15

1695 posts in 2312 days


#8 posted 12-15-2016 01:43 AM

I was referring to shrinkage in width, not thickness.

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com

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LiveEdge

564 posts in 1457 days


#9 posted 12-15-2016 04:56 PM



I was referring to shrinkage in width, not thickness.

- WDHLT15

OK. The funny thing is, I actually used the term for the width shrinkage (tangential) even though I had meant to quote you the thickness shrinkage (which is actually radial shrinkage). Anyway, tangential shrinkage for Red Oak is quoted as 8.6% so subtract that from your width.

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steveswoodlandmills

5 posts in 366 days


#10 posted 12-15-2016 05:21 PM

Looks like two different conversations here. My guy is worried about the thickness (radial) and needs it to be atleast 1 1/2 inch after shrinkage.

Thanks for clearing up the terms
So for red oak
Radial shrinkage is 4 % (thickness)
and Tangential shrinkage is 8.6 % (width) is this the same for length?

Does how the boards are cut change that? say quarter sawn vs flat sawn?

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LiveEdge

564 posts in 1457 days


#11 posted 12-17-2016 12:16 AM

I’m not an expert, but I don’t think so. I think certain cuts make it more stable (ie not bowing or cupping) while it shrinks, but it shrinks all the same.

View Shawn Masterson's profile

Shawn Masterson

1322 posts in 1785 days


#12 posted 12-17-2016 01:40 AM

Honestly if hes worried about shrinkage I would tell him you have no control over what happens. wood does it’s own thing, and the only way to ensure uniform material is to dry it, plane it then cut to sizes needed.

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WDHLT15

1695 posts in 2312 days


#13 posted 12-17-2016 02:01 AM

Flatsawn boards shrink almost twice as much as quartersawn boards. This is tangential shrinkage versus radial shrinkage.

https://www.extension.purdue.edu/extmedia/fnr/fnr-163.pdf

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com

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