On Feb 18, 2:11 pm, Andy Dingley wrote:

If you just make each one slightly longer than the others, they'll
stack far more easily than most of the other complicated ways of doing
it.

I needed to make 20 trestles to hold up table tops. I decided that all
the trestles around were horrible and wouldn't stack well so I
designed trestles with offset legs. The thickness of a trestle when
folded flat was 40mm (2 pieces of wood thick).