ntx4core/src/main/resources/data/dmlreforged/loot_tables/blocks/machine_casing.json

{
    "type": "minecraft:block",
    "pools": [
        {
            "bonus_rolls": 0.0,
            "conditions": [],
            "entries": [
                {
                    "type": "minecraft:item",
                    "name": "dmlreforged:machine_casing"
                }
            ],
            "rolls": 1.0
        }
    ]
}