On Tuesday, February 13, 2018 at 10:46:18 PM UTC-6, Doug Miller wrote:
Anybody have any idea what this is?

http://milmac.com/20180213_134524.jpg

Photo doesn't show quite the full width of the board; it's 9+ inches wide, and the photo
probably shows between 7 and 8.

The wood has no perceptible odor, dry or damp (which also rules out oaks).

It's hard enough that I can't dent it with a fingernail, and surprisingly lightweight -- suggestive
of ash, I suppose, but the grain isn't quite right, and the color is definitely not right, for that.
Not heavy enough for oak, and the grain isn't right, either.

I'm located in Indianapolis, and the wood is presumably of more-or-less local origin -- it's
been sitting in the corner of a high school wood shop for many years. Likely to be from
somewhere in the Midwest, probably central Indiana.

Kentucky coffee-tree, maybe?

When in doubt, and really wanting to know, send a bit to the Forest Products Lab in Wi. It will take them a bit to get and answer back, but you will know exactly what you are dealing with. Reclaim some of your tax dollars, because its a "free" service.

https://www.fpl.fs.fed.us/contact/index.php