Reply by WDHLT15

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Posted on Cupped Pecan Slab

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1788 posts in 2652 days

#1 posted 02-16-2015 01:00 PM

Two things I have experienced:

1). There is more internal stress in the wood than in most species. Sawing boards releases this natural growth stress. It is paramount that the sawyer understand how to release and balance the stress as much as possible. This requires frequent turning of the cant to the 180 degree face as you saw the cant. Many pecan trees branch into several main trunks only a few feet off the ground. These multiple trunks are usually not perfectly straight/vertical, and the tree produces tension wood as a result. This tension wood moves while shrinking and drying, and is prone to cup. It is best to cut pecan from a single trunk section before any main branches divide the trunk. Like this forest grown pecan. Beautiful lumber came from this tree.

Here are some orchard pecan that had short trunks, but some very beautiful wood.

2). Pecan grain around the knots many times will “kink” or have a dip or crook that will not plane out and will cause you to have to cut out short sections to get usable wood. Pecan is a hickory, and I have found other hickories difficult to dry straight as well.

The key is to saw good straight logs, and to sticker on closer intervals with a perfectly flat foundation. I sticker at 16” intervals.

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

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