"Toller" wrote in message
...

First, back to the fpl site, where you'll find that the inverse square
rule
applies. Double the thickness, almost four times the time to equalize.
Believe they say "more than three." Second, evaluate the grain
direction. I'm presuming you have heartwood, but not boxed hearts, or you
might as well plan on burning them this fall.

Heartwood yes, but what is "boxed hearts"?

I also have several boards completely sapwood. I thought it might be fun
to have "white" walnut.

When sawing for grade, the sawyer will cut boards around the heart, since
that's where the branches originate, and where their remains are. It's
called "boxing," and it results in a piece of wood which is entirely
unpredictable in whether or not it will split, where it will happen
(believe me, it'll be where the wood has no knots ). Where the heart runs
in and out of any pieces you might have, I'd recommend cross cutting,
end-treating, and stacking those without the heart separately.

Next time you're at the Borg, look at the 4x4 pieces they have, and see what
happens with boxed hearts.

Sapwood walnut is softer, sort of ugly in the white. Kiln operators
normally steam it to get some of the extractives from the heart to color it.
Remains soft and weird-looking, though. "White walnut" is butternut, a
related species, and pretty good looking in its entirety.