Reply by Dchip

I believe the mitered border around a solid wood interior would cause problems as well with the seasonal movement of the inside. Then again, most offices are pretty climate controlled so to what degree is the question.

Breadboard ends are an option, as they will give some stability and can be doweled to allow for expansion , plus they will keep your top flat.

I see veneering is mentioned above, but this may not be possible to resaw without a decent bandsaw. Not to mention vacuum presses, etc…

-- Dan Chiappetta, NYC, http://www.9x7woodworks.com