Topic: Hot end heats to temp then starts dropping
My first print completed. It was 20mm cube, but it stopped at about 4-5mm and told me it was done.
Since then, whenever I get hot enough to print, the temperature starts coming down. Sometimes it will tell me the print is done, and sometimes still say heating extruder or ETA to finish.
It happens if I preheat the extruder manually and wait for it to get to temperature then start printing or if I hit print and let it heat up automatically.
I have used two different models and used Slic3r and Cura with Repetier Host. I am still getting the same problem. My filament was not flowing very well at 220 degrees, so I am setting it to 230. Here is my latest g-code. They are all roughly similar.
I tried copying my temperature curve. Didn't cooperate. Essential it shows going up to temperature and then coming down in a nice peak and smooth curve.
; generated by Slic3r 1.1.7 on 2015-04-01 at 17:43:10
; perimeters extrusion width = 0.40mm
; infill extrusion width = 0.67mm
; solid infill extrusion width = 0.67mm
; top infill extrusion width = 0.67mm
G21 ; set units to millimeters
M107
M190 S70 ; wait for bed temperature to be reached
M104 S220 ; set temperature
G28 ; home all axes
G1 Z5 F5000 ; lift nozzle
M109 S220 ; wait for temperature to be reached
G90 ; use absolute coordinates
G92 E0
M82 ; use absolute distances for extrusion
G1 F3000.000 E-2.00000
G92 E0
......
G1 F3000.000 E5.10477
G92 E0
M107
M104 S0 ; turn off temperature
G28 X0 ; home X axis
M84 ; disable motors
; filament used = 636.5mm (1.5cm3)
; avoid_crossing_perimeters = 0
; bed_size = 200,200
; bed_temperature = 85
; bridge_acceleration = 0
; bridge_fan_speed = 100
; bridge_flow_ratio = 1
; brim_width = 0.8
; complete_objects = 0
; cooling = 1
; default_acceleration = 0
; disable_fan_first_layers = 1
; duplicate_distance = 6
; end_gcode = M104 S0 ; turn off temperature\nG28 X0 ; home X axis\nM84 ; disable motors
; external_perimeters_first = 0
; extruder_clearance_height = 20
; extruder_clearance_radius = 20
; extruder_offset = 0x0
; extrusion_axis = E
; extrusion_multiplier = 1
; fan_always_on = 0
; fan_below_layer_time = 60
; filament_diameter = 1.75
; first_layer_acceleration = 0
; first_layer_bed_temperature = 70
; first_layer_extrusion_width = 200%
; first_layer_speed = 30%
; first_layer_temperature = 220
; g0 = 0
; gcode_arcs = 0
; gcode_comments = 0
; gcode_flavor = reprap
; infill_acceleration = 0
; infill_first = 0
; layer_gcode =
; max_fan_speed = 100
; min_fan_speed = 35
; min_print_speed = 10
; min_skirt_length = 0
; notes =
; nozzle_diameter = 0.4
; only_retract_when_crossing_perimeters = 1
; ooze_prevention = 0
; output_filename_format = [input_filename_base].gcode
; perimeter_acceleration = 0
; post_process =
; print_center = 98,93
; resolution = 0
; retract_before_travel = 2
; retract_layer_change = 1
; retract_length = 2
; retract_length_toolchange = 2.5
; retract_lift = 0
; retract_restart_extra = 0
; retract_restart_extra_toolchange = 0
; retract_speed = 50
; skirt_distance = 6
; skirt_height = 1
; skirts = 2
; slowdown_below_layer_time = 30
; spiral_vase = 0
; standby_temperature_delta = -5
; start_gcode = G28 ; home all axes\nG1 Z5 F5000 ; lift nozzle
; temperature = 220
; threads = 2
; toolchange_gcode =
; travel_speed = 150
; use_firmware_retraction = 0
; use_relative_e_distances = 0
; vibration_limit = 0
; wipe = 0
; z_offset = 0
; dont_support_bridges = 1
; extrusion_width = 0
; first_layer_height = 0.3
; infill_only_where_needed = 0
; interface_shells = 0
; layer_height = 0.2
; raft_layers = 0
; seam_position = aligned
; support_material = 0
; support_material_angle = 0
; support_material_enforce_layers = 0
; support_material_extruder = 1
; support_material_extrusion_width = 0
; support_material_interface_extruder = 1
; support_material_interface_layers = 3
; support_material_interface_spacing = 0
; support_material_interface_speed = 100%
; support_material_pattern = pillars
; support_material_spacing = 2.5
; support_material_speed = 60
; support_material_threshold = 0
; bottom_solid_layers = 3
; bridge_speed = 60
; external_perimeter_speed = 70%
; extra_perimeters = 1
; fill_angle = 45
; fill_density = 0%
; fill_pattern = rectilinear
; gap_fill_speed = 20
; infill_every_layers = 1
; infill_extruder = 1
; infill_extrusion_width = 0
; infill_speed = 60
; overhangs = 1
; perimeter_extruder = 1
; perimeter_extrusion_width = 0
; perimeter_speed = 60
; perimeters = 2
; small_perimeter_speed = 30
; solid_fill_pattern = rectilinear
; solid_infill_below_area = 70
; solid_infill_every_layers = 0
; solid_infill_extrusion_width = 0
; solid_infill_speed = 60
; thin_walls = 1
; top_infill_extrusion_width = 0
; top_solid_infill_speed = 50
; top_solid_layers = 0
