'I ♥︎ Iron Armour'

One of two well-known tomes that teach the making of iron equipment—this one's about armour.

Location: Laguna di Gondolia

Iron Helmet: (helmet +16 to 19 ･ 1 ★ 160 ･ rework: 6)
  An unremarkable everyady helm made of iron.
  2x Iron Ore
  2x Glass Frit

Iron Cuirass: (armour +25 to 30 ･ 1 ★ 176 ･ rework: 6)
  A breastplate built from beaten iron sheeting.
  3x Iron Ore
  1x Glass Frit
  1x Celestial Skein

Iron Armour: (armour +32 to 38 ･ 1 ★ 200 ･ rework: 6)
  Weighty armour that provides impressive protection.
  3x Iron Ore
  2x Glass Frit
  1x Beast Bone