{ "type": "machine_model", "name": "Wanhao D9-500 MK2", "model_id": "Wanhao-D9-500-MK2", "nozzle_diameter": "0.4", "machine_tech": "FFF", "family": "Wanhao", "default_materials": "Generic PLA @System;Generic PETG @System;Generic ABS @System" }