Oh... with the wing fillets and some hardware and plates, I managed to bring the airframe up to 12 oz (those treacherous wing fillets!) - probably 1/2 oz in epoxy, microballons and filler.

With the stab mounted and filleted and a couple of reinforcements to the front section (I've decided to add some tri stock and a couple of balsa doublers in vertical grain where the front holes are) once the FW is hollowed out and mounted, I'll probably end up with a 12.5 oz airframe.

This is leading me to think I might have a ~16 oz finished airframe. Add 10 oz of gear and we'll have a nice 26 oz RTF mini ballistic pattern ship!

David.