{
  "input" : [
    { "item" : "matteritem", "count" : 8 },
    { "item" : "steelbar", "count" : 6 }
  ],
  "output" : { "item" : "bonusarmorhead", "count" : 1 },
  "groups" : [ "metalworkstation", "armors", "all" ]
}