Originally Posted by
Niels J. Larsen
Either I used the wrong word or you misunderstood what I meant about the mattress in question.
It's a boxed mattress with springs - i.e. a "normal" soft mattress with two layers of springs, but with a wooden boxed bottom, so the most basic way of using it as a bed is to attach either 4 single legs or 2 double legs.
This way I feel the support at the perimeter is more than adequate - unless the support will break off the bed itself due to the combined weight of the mattress and the person in it. I doubt that's possible however.