Bisected8: I think the point is that he used the word without knowing what it meant initially.


Cog:
Suggest replacing "Cooper" with "Carpentry".
Decent for defending a fixed location... for more than that, giving it a movement boosting item (Winged Barrel Ring, instead of Winged Boots???) is going to be basically a requirement... it is too heavy to load into a cart.
Might actually be popular to build onto the back of a ship to catch catapult stones and ballista bolts, since it would have neutral bouancy. This is especially true if being mostly submerged grants it Cover.
Armor doesn't normally need hitpoints, and I would consider making it MAGICAL armor at the VERY least, so that it gets a save against Warp Wood, or specifically say that the barrel is enough a part of the construct that is effected like a wooden golem would be (however that is) rather than as armor for those purposes.