halfdome, Danny wrote:Heikki, it looks like you are dealing with two differently sealed surfaces, one aluminum and the other finished wood. The moisture will be absorbed more on the wood side even though it is sealed. If it's bowed on the outside sightly (convex) the hinge and door latch just might pull it up along with weather striping. I would store them inside wrapped in a heavy blanket. Beautiful veneer,. Is that Honduran Mahogany?Danny
Danny you explained it lots better than I did.. yes thats the way its warped exactly...

Heikki