I found the model plane that this cowl appears to come from: http://www.itsawingthing.com/index.php?_a=viewProd&productId=76

Looks like it would be thin light plastic. I imagine printing it out and making the model plane would be quite fun. My wife says I don't need a 3d printer as we are surrounded by shops and can buy stuff 24 hours a day. I can therefor only guess at whether it would be possible to print out a thin light cowl from Moi. I know that 3d coat also produces printable models and the shelling and smoothing of the model seems to be easier to achieve than with Moi. Presumably a 3d printer needs a solid rather than joined surfaces?

I'm tempted to model the rest of the aircraft:)
Keith