{
    "pre":[
        "M140 S{bed_temp}   ; set bed temp",
        "M104 S{temp}       ; set hot end temp",
        "M105               ; report temps",
        "M190 S{bed_temp}   ; wait for bed",
        "M105               ; report temps",
        "M109 S{temp}       ; wait for hot end",
        "M82                ; absolute extrusion mode",
        "G90                ; absolute positioning mode",
        "G21                ; use metric values",
        "G28                ; home axes",
        "G92 E0             ; reset filament position",
        "G1 Y0.2            ; move to bed",
        "G1 X200 E50 F500   ; purge nozzle",
        "G1 Z0.3            ; move bed 0.3mm",
        "G1 X0 E50          ; purge nozzle",
        "G1 Z2              ; move bed 2mm",
        "G92 Z0             ; reset bed position",
        "M117 CR-30 Printing..."
    ],
    "post":[
        "M107               ; disable cooling fan",
        "M106 P0 S0         ; disable cooling fan",
        "M104 S0            ; shut down hot end",
        "M140 S0            ; shut down bed",
        "G92 E1             ; set filament position",
        "G1 E-1 F300        ; retract filament",
        "G28                ; home axes",
        "G1 Y50 F1000       ; lift y axis",
        "M84                ; disable stepper motors"
    ],
    "extruders":[
        {
            "nozzle": 0.4,
            "filament": 1.75,
            "offset_x": 0,
            "offset_y": 0,
            "select": [ "T0" ]
        }
    ],
    "cmd":{
        "fan_power": "M106 S{fan_speed}",
        "progress": "M117 {progress}% layer {layer} / {layers}",
        "layer": [
            ";; --- layer {layer} {height} @ {z} ---",
            "M117 {progress}% layer {layer} / {layers}"
        ]
    },
    "settings":{
        "image_url": "/decal/3dprintmill.png",
        "image_anchor": 0,
        "image_scale": 1,
        "origin_center": false,
        "extrude_abs": true,
        "bed_belt": true,
        "bed_width": 200,
        "bed_depth": 300,
        "build_height": 170
    }
}