Thanks, guys for the great advice. I have, unfortunately, decided to
abandon this project with this species. I do not have time to quickly glue
up, then assemble the project. Things are going to sit around. My shop is
in my basement - a walk out garage. No heat vents around, but the temp
stays very comfortable year round, even down here in the Deep South during
the summer. I'm inclined to think that this species of wood just sucks up
moisture. I bought the wood in May and it's been sitting around for three
months or so before I started milling it. I am really concerned when I
leave a panel lying flat on my bench and a week later it is cupped. No, I
did not sticker it during storage or milling. I need to start doing that.

A lesson learned for me. I've still got 200 BF of primavera to do something
with......




"bob" wrote in message
.. .
I am building a kitchen hutch out of primavera, also known as "white
mahogany". The wood was purchased from an importer with a kiln, so it is
kiln dried. I milled the wood to 3/4", glued up a bunch of panels roughly
16 inches wide, composed of 3 boards 5 to 6 inches wide. All was well for
a couple of weeks. Then, when I started assembling the hutch, I discovered
my panels are cupped across the grain - roughly 3/16 of an inch across 16
inches. Not all of them are cupped, but perhaps half of 20 panels are.
The moisture content is 12 to 14%, which seems high. I can't tell any
significant difference between cupped and uncupped panels. My genuine
mahogany and some oak, also stored in the shop, both measure around 8%.
I've noticed that the cupped panels will "uncup" over a few days, then
re-cup.

Any ideas why this is happening? Are the panels useable? I'm thinking
not.

Also, when you glue up panels, should they be stickered while stored?
I've always just stacked 'em up on some sawhorses or whatever is handy.

This is the first time I've worked with primavera, so maybe it's just not
a good species to use for furniture...

Thanks.

Bob