Interesting shrinkage (?) behavior in Douglas fir

Have see something similar on some Manuka once….

wood not fully dried ???

-- Rome wasn't built in a day... but I wasn't on that job? ... http://www.wackywoodworks.co.nz

Isn’t this stuff kiln-dried after it’s dimensioned?

-- Einstein: "The intuitive mind is a sacred gift, and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." I'm Poopiekat!!

I’m sure it is. This piece came from near the center, so it may not have been as dry as the edges. What you don’t see is that the grain is also really straight, so this hourglassing is the only warpage happening.

-- "A man may conduct himself well in both adversity and good fortune, but if you want to test his character, give him power." - Abraham Lincoln

Grown on the northeast side of a slope. Has experienced a lot of twisting and flexing (probably due to wind) before harvest. Usually after moisture is down to less than 8-10 % the lumber can then be milled to the desired shape (Square edges?)

-- Sawdust and shavings are therapeutic

Are you sure your table saw blade is straight?
Just kidding! Can’t help…:)

It’s because the outside of the board was drier than the inside, and once you opened it up and exposed the inner surfaces they started drying. Beautiful piece of old growth df by the way. This piece of wood needs more time to adjust to the ambient humidity.

-- Bondo Gaposis

Was considering making some interior door frames out of CVG doug fir, mainly because I read somewhere it didn’t move a lot, and it’s harder than some hardwoods, and takes paint nicely.

Is the movement in the picture normal? Is the lesson here to mill it oversize, and let it rest for (fill in the blank) days/months/don’tsayyears ?

Believe it or not, the vast majority of df you get in that manner is green as the day is long. They cut and mill it, then run it thru a heater to kill any bugs, dip it in a bug/mold killer, then stack it and sell it. The kiln dried 2×4’s there are white wood, usually poplar. The reason you don’t see that more often is because it is extremely rare to see such a tight grain in fir; there is enough structure in all them lines to hold it from cupping, the “normal” type of movement associated with flat sawn woods. I know a lot of sash and frame makers that would happily pay $2.50 a board foot for that wood.

-- Power tools put us ahead of the monkeys

Was it in the pool?

-- Dan, Rochester, NY

The pool? I don’t think so – it was in HD, then the back of my truck, then my garage, where it’s been since.

-- "A man may conduct himself well in both adversity and good fortune, but if you want to test his character, give him power." - Abraham Lincoln

Heh.. Seinfeld reference..

-- Dan, Rochester, NY

^shrinkage! I think it probably has most to do with HD. There’s no telling how that stuff was handled. It looks like a nice piece of wood, though. I haven’t seen any that nice in my local store. Perhaps I should have another look:)

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog