Plymax consisted of a thin sheet of duralumin bonded to a thicker sheet of plywood.
2.
This was unavailable due to federal financial policy, so a similar material was obtained from England, called Plymax.
3.
The MS . 405 was a low-wing monoplane of mixed construction, with fabric-covered wooden tail, but a bonded metal / wood material ( " Plymax " ) skin fixed to duralumin tubing.