eaglercraft-1.8-workspace/desktopRuntime/resources/assets/minecraft/models/block/cube_all.json

{
    "parent": "block/cube",
    "textures": {
        "particle": "#all",
        "down": "#all",
        "up": "#all",
        "north": "#all",
        "east": "#all",
        "south": "#all",
        "west": "#all"
    }
}