I cannot source 3mm ply here in China.
However I can get a thin ply with a hardwood or decorative wood laminate top surface.
This is used to make the skin for doors or to put on table tops, and cabinet sides.
It seems to be stable. It is also very flat and does not appear to distort near the edges.
Has anyone used this for model construction? Or does anyone know if it is of a suitable construction?
Advice from any chippy, shipright, retired taxman, chef, or merchant seaman appreciated.