Cura/resources/definitions/tank_m3.def.json

{
    "version": 2,
    "name": "Tank M3",
    "inherits": "tank_m_base",
    "metadata":
    {
        "visible": true,
        "quality_definition": "tank_m_base"
    },
    "overrides":
    {
        "gantry_height": { "value": 0 },
        "machine_depth": { "default_value": 235 },
        "machine_head_with_fans_polygon":
        {
            "default_value": [
                [-26, 34],
                [-26, -32],
                [32, -32],
                [32, 34]
            ]
        },
        "machine_height": { "default_value": 250 },
        "machine_name": { "default_value": "Tank M3" },
        "machine_width": { "default_value": 235 }
    }
}