Reply by Bernie

I’m no expert, but 42” is a long span and I bet it will sag, even a 2” thick. When the wood fibers all run in the same direction, the stress overcomes them on that long of a span.

Options I think… sandwich 2 one inch boards and cover the glue-up with a simple straight frame. You could even use a different type of wood like a light wood (ash or white oak) or dark wood (walnut, mahogany). Or you could slice a strip off the top board to match the grain and blend it in. Or you could use the veneer strips that are melted on with an iron.

The other option is to cut a couple of strips and glue them on the underside.

By the way, cherry is a beautiful wood, but may change color when left in the sunlight. Good luck with your project!

-- Bernie: It never gets hot or cold in New Hampshire, just seasonal!