tools/object_settings/marker_settings_knife.json

{
    "gender": "unknown",
    "markersets": [
        {
            "distance_from_skin": 0.0002,
            "indices": {
              "knife1": 29163,
              "knife2": 26719,
              "knife3": 33022,
              "knife4": 7786,
              "knife5": 15796,
              "knife6": 12312,
              "knife7": 33254,
              "knife8": 28914
            },
            "marker_radius": 0.0032,
            "type": "object"
        }
    ]
}