Same thing happened to me -- the dinette table on many RVs is made of MDF, which is really just compressed cardboard. It is both heavy and weak. When it was in the "down" position (to support the mattress), I sat on the edge and felt it bend under my weight. (I am a large person -- 6'4" and 230 lb.)
So I made my own out of laminated baltic birch plywood -- an easy project. Here is a description:
The LMIC (Look Mom I'm Camping): A Lighter Dinette Table (Baltic Birch Ply Instead of MDF and Formica)
Our "custom" table is lighter and stronger than the MDF, and it looks a lot nicer. Probably cheaper than buying a new MDF table, too.
Let me know if you have any questions! And be sure to ask lots of questions if this is your first trailer. Us old timers love to answer them!
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