I can't see putting cosmoline on the outside of a box. It'd be really messy for quite a while. A fast-drying sealing wax sounds more likely. Especially since t

I can't see putting cosmoline on the outside of a box. It'd be really messy for quite a while. A fast-drying sealing wax sounds more likely. Especially since the gears themselves don't seem to be loaded up with cosmoline.