Helpers
Iron Shutters
Put the crafted block on your hotbar, hold Reload and select the Shape entry from the radial menu. Click or Shift-Click to select a variant to build with.
Upgrade path
Hit a placed block with a stone axe, claw hammer or nail gun while carrying the material of the next step: 5 hits per upgrade.
Crafting
Craft at Backpack · makes 1
Forged Iron× 10
Harvest drops
Iron× 40
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
When it collapses
Falling, it leaves 
Scrap Metal Pile (75% of the time) where it lands.
