Thomas,
Perhaps I'm uneducated in this, but I see these 3D printed parts which is very cool technology, but it seems to me most of the 3D printed stuff I see has a very "textured" surface for lack of a better term. You can see all the layers. If you are printing surface detail such as rivets and panel lines, do you not defeat the point of printing that detail when you have to still sand the surface smooth? The armament you have printed looks really cool, but there are so many facets, or layers, do those all need to get sanded smooth and in doing so you still have to go back to recreate all of the detail then do you not?
Jeremy