input: {
  "linen": { type: "block", code: "linen-down" },
  "needle": { type: "item", code: "needle", isTool: true },
  "metal": { type: "item", code: "metalscales-*", allowedVariants: ["copper", "tinbronze", "iron"] }
},
output: { type: "item", code: "armor-body-plate-{metal}" },
productionSteps: [
    {
        name: "Add linen base layer",
        selectionBoxes: {
            "body-front": { x1: 0, y1: 0, z1: 0, x2: 0.25, y: 0.3, x2: 0.25 },
            ....
        },
        interactions: [
            {
               input: "#linen",
               interaction: { type: "rightmousedown", target: "body-front", duration: 0 },
               shape: { base: "armorcrafting/gambeson/linen-body-front-layer1" },
               shapeMergeType: "Add",
           },
           {
               input: "#linen",
               interaction: { type: "rightmousedown", target: "body-back", duration: 0 },
               shape: { base: "armorcrafting/gambeson/linen-body-back-layer1" },
               shapeMergeType: "Add",
           },
           [ ....more step number 1 steps for arms here.... ]
        ]
   },
   {
        name: "Stitch linen layer. Texture is defined in the shape",
        selectionBoxes: {
            "body-front": { x1: 0, y1: 0, z1: 0, x2: 0.25, y: 0.3, x2: 0.25 },
            ....
        },
        interactions: [
           {

               input: "#needle",
               interaction: { type: "rightmousedown", target: "body-front", duration: 3 },
               shape: { base: "armorcrafting/gambeson/linen-body-front-layer2" },
               shapeMergeType: "Replace",
           },
           [ .... more steps .... ]
        ]
   },
   {
        name: "Add metal scales",
        selectionBoxes: {
            "body-front": { x1: 0, y1: 0, z1: 0, x2: 0.25, y: 0.3, x2: 0.25 },
            ....
        },
        interactions: [
           {
               input: "#metal",
               interaction: { type: "rightmousedown", target: "body-front", duration: 3 },
               shape: { base: "armorcrafting/gambeson/linen-body-front-scales" },
               texture: { base: "block/metal/ingot/{metal}" },
               shapeMergeType: "Add",
           }
        ]
    }
]