Excellent thought, and I actually considered this, but I've already got the 19cc cases ready to fly and I'm tired of being covered with aluminum dust! Also, this particular 25cc case is quite different -- It has a solid (unvented) fan shroud that's continuously cast arond the case. Its also got a cast aluminum back cover. They used the cast cover (it has two mounting lugs on it) as the rear mount of the engine in the plastic clamshell housing. FYI, the blower this came out of -- although a Weedeater brand -- was not labeled as a featherlite model. Before getting the plastic clamshell peeled open I expected to find one of their wierd-configuration reed-valve motors that aren't much use for planes. I was surprised to find this featherlite variant lurking inside.