Perforated Steel Plates, or PSP, was used extensively in wartime to
make temporary air bases just about anywhere. Once the ground was cleared
away, PSP was laid down, with sections linked together, forming a sturdy
base for planes to taxi over without having to worry about getting stuck
in the dirt and mud underneath.
Eduard has recently released a base of PSP in both 1/72 and 1/48. The
1/72 base is roughly 6" x 9" and is injection molded. The plates
are all molded in place, running the length of the base. This should be
a blast to paint up, as PSP quickly rusted and got very dirty. This is
something you can practice all those different weathering techniques you've
been wanting to try out, and no matter how much you do it will never look
like too much.
The only complaint that I have is that this base will be difficult to
incorporate into a diorama due to the shape of it, and it will be difficult
to piece several together to display something like a B-50 or C-97. But
for a small plane, up to a mid-sized twin-engined bomber, this will make
for a simple and effective display base.