Metal takes longer to finish building and only spawns with 70HP, meaning players can easily shoot it down, and you with it.
New players tend to think metal is the best material to use, but this is often not the case. Metal takes longer to finish building and only spawns with 70HP, meaning players can easily shoot it down, and you with it. Wood, on the other hand, spawns with 100 HP and builds much faster (to a max of 200 HP) than brick or metal. In other words: to block bullets, or when building aggressively, you should use wood. When building a safe little hideout, use metal or brick.