Hi
It is very simple, you find a supplyer of Aero Veneer. It is ultra thin
high quality plywood (remember it's also possible to manufactor plywood
into a top quality), anyway this product are the favorite sheet
material model building.
It go in quarter millimeter 0.25 halve millimeter and two millimeter ,
the 0.25 are 3 layers still. It is perfect for reinforcement for thin
Epoxy work easy and can even be cut with sisors , also the most common
failure in amature model building, is to chose a material that is
infact to thick compared model scale, better use even thinner panels
--- best with a reliable frame structure.