Binding of Isaac: Rebirth Wiki

Added in Afterbirth †

Smelter is an unlockable activated item added in The Binding of Isaac: Afterbirth †.


  • Upon use, any trinkets that Isaac is holding are destroyed, and their effects are permanently applied to him.
    • Added in Repentance Trinkets that are absorbed show up on the HUD's item tracker.
  • Increases the chance for a trinket to drop. (Has a 2% chance to turn the pickup variant into a trinket.)


  • While held, Mom's Box Mom's Box will double the effect of all absorbed trinkets (if their effects can be doubled).
  • This item can remove the Tick Tick.
  • Trinkets whose effects only activate once, such as Store Credit Store Credit, Missing Poster Missing Poster, and Walnut Walnut, will still only activate once after being absorbed.
  • Added in RepentancePerfection Perfection is still removed if Isaac takes damage from regular sources.
  • Added in Repentance Faded Polaroid Faded Polaroid cannot be used to open the Strange Door if smelted.
  • It is possible to find previously smelted trinkets during a victory lap, or if the trinket Item Pool is exhausted.
  • Removed in Repentance Picking up a copy of a trinket which was already absorbed will not duplicate that trinket's effect.
  • Removed in Repentance The trinket will not be absorbed if Smelter is activated during the pickup animation.


  • Added in RepentanceBook of Virtues Book of Virtues: Spawns yellow wisps on the middle ring. The wisps have a chance to spawn trinkets when destroyed.

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  • Smelter, alongside Marrow Marrow are currently the only items that can be unlocked specifically by defeating Mom's Heart Mom's Heart or It Lives It Lives on hard mode.