Um,had the wood cut to rough shape,I'll do the curves,etc.But..went for 3/8 ply.Haven't tried it yet,will it support one adult,or is there a way to reinforce the table underneath?Any thoughts appreciated!
There are a couple of ways to reinforce 3/8 ply. The easiest and most obvious is to glue and clamp 3" wide strips of 3/8 ply across the front, back, and one every 16" in the middle of the table, then fill in the sides. Something like this, if you ignore the "slide" for the pedestal leg in the center.
We get away with less support on our table because it's primarily meant as a bed for grandkids (someday), but it does occasionally get used to make a cozy corner nest where the two of us can curl up on the dinette bed and watch a movie. We get away with climbing on it because it has an extra support that fills in the cutouts on the corners and supports one end of the table, and neither of us weigh over 175 pounds.
The tuck-in support is another way you can do things, but it is bulky to store. I plan to replace it at some point with something a little more compact.