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Unresolved Robo R1 beta with stringy prints

Discussion in 'Troubleshooting' started by Eliseo Gonzalez, Feb 25, 2020.

  1. Eliseo Gonzalez

    Eliseo Gonzalez New Member

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    So I purchased a used robo r1 beta for which I replaced the hotend to an e3d online v6 lite one. Also added a magnetic pad for the print bed.

    I have tried different types of pla, also at different temperatures, ranging from 180 up to 230c, and still I get very stringy results. Here is an example of a printout I did at 200c, I uploaded an image which is attached to this post.

    other than that, the printouts are great, they are strong and have good quality.

    I use Mattercontrol to print, and I exported the settings to an INI file which I have copied the settings below.

    Any help would be greatly appreciated, thanks

    -------------settings.ini-----------

    avoid_crossing_perimeters = 1
    bed_shape = rectangular
    bed_size = 228,254
    bed_temperature = 50
    bottom_clip_amount = 0
    bottom_solid_layers = 1mm
    bridge_acceleration = 0
    bridge_fan_speed = 50
    bridge_flow_ratio = 1
    bridge_speed = 60
    brim_width = 0
    build_height = 200
    cancel_gcode = G28 X0\n
    center_part_on_bed = 1
    complete_objects = 0
    connect_gcode =
    cool_extruder_lift = 0
    print_leveling_solution = 3 Point Plane
    print_leveling_method = Manual
    print_leveling_required_to_print = 0
    manual_probe_paper_width = .1
    cooling = 0
    create_raft = 0
    default_acceleration = 0
    disable_fan_first_layers = 0
    end_gcode = M104 S0 ; turn off temperature\nG1 X10 Y200\nM84 ; disable motors
    external_perimeter_speed = 50
    external_perimeters_first = 0
    extra_perimeters = 1
    extruder_clearance_height = 20
    extruder_clearance_radius = 20
    extruder_count = 1
    extruder_offset = 0x0
    extruder_wipe_temperature = 0
    extruders_share_temperature = 0
    extrusion_axis = E
    extrusion_multiplier = 1
    extrusion_width = 0
    fan_always_on = 0
    fan_below_layer_time = 60
    filament_diameter = 1.75
    fill_angle = 45
    fill_density = 0.2
    fill_pattern = rectilinear
    first_layer_acceleration = 0
    first_layer_bed_temperature = 90
    first_layer_extrusion_width = 100%
    first_layer_height = 0.2
    first_layer_speed = 30%
    first_layer_temperature = 225
    g0 = 0
    gap_fill_speed = 20
    gcode_arcs = 0
    gcode_comments = 0
    gcode_flavor = reprap
    gcode_output_type = REPRAP
    has_fan = 1
    has_hardware_leveling = 0
    has_heated_bed = 1
    has_power_control = 0
    has_sd_card_reader = 1
    show_reset_connection = 0
    heat_extruder_before_homing = 0
    include_firmware_updater = Simple Arduino
    infill_acceleration = 0
    infill_every_layers = 1
    infill_extruder = 1
    infill_extrusion_width = 0
    infill_first = 0
    infill_only_where_needed = 0
    infill_overlap_perimeter = .06
    infill_speed = 60
    infill_type = GRID
    layer_gcode =
    layer_height = 0.1
    layer_to_pause =
    max_fan_speed = 30
    min_extrusion_before_retract = 1
    min_fan_speed = 0
    min_print_speed = 10
    min_skirt_length = 5
    notes =
    nozzle_diameter = 0.4
    only_retract_when_crossing_perimeters = 0
    ooze_prevention = 0
    output_filename_format = [input_filename_base].gcode
    overhangs = 1
    pause_gcode =
    perimeter_acceleration = 0
    perimeter_extruder = 1
    perimeter_extrusion_width = 0
    external_perimeter_extrusion_width = 100%
    perimeter_speed = 60
    perimeters = 2
    post_process =
    print_center = 114,127
    raft_air_gap = .6
    raft_extruder = 0
    raft_extra_distance_around_part = 5
    raft_fan_speed_percent = 100
    raft_layers = 0
    raft_print_speed = 100%
    bed_remove_part_temperature = 0
    randomize_start = 1
    repair_outlines_extensive_stitching = 0
    repair_outlines_keep_open = 0
    resolution = 0
    resume_gcode =
    retract_before_travel = 5
    retract_layer_change = 1
    retract_length = 1
    retract_length_tool_change = 10
    retract_lift = 0.3
    retract_restart_extra = 0
    retract_restart_extra_toolchange = 0
    retract_when_changing_islands = 0
    retract_speed = 150
    skirt_distance = 6
    skirt_height = 1
    skirts = 2
    slowdown_below_layer_time = 10
    small_perimeter_speed = 35
    solid_fill_pattern = rectilinear
    solid_infill_below_area = 70
    solid_infill_every_layers = 0
    solid_infill_extrusion_width = 0
    solid_infill_speed = 60
    solid_shell = 0
    spiral_vase = 0
    standby_temperature_delta = -5
    start_gcode = G28 X0 Y0 Z0 ; home all axes\nG1 Z5 F5000 ; lift nozzle\nM109 S200 ; set the extruder temp and wait\nG28 X0 Y0 Z0 ; Home Z again in case there was filament on nozzle\nG29 ; probe the bed
    start_perimeters_at_concave_points = 0
    start_perimeters_at_non_overhang = 0
    support_air_gap = 0.6
    support_material = 0
    support_material_angle = 0
    support_material_percent = 20
    support_material_create_internal_support = 0
    support_material_create_perimeter = 1
    support_material_enforce_layers = 0
    support_material_extruder = 1
    support_material_extrusion_width = 0
    support_material_infill_angle = 60
    support_material_interface_extruder = 1
    support_material_interface_layers = 1
    support_material_interface_spacing = 0
    support_material_pattern = rectilinear
    support_material_spacing = 3
    support_material_speed = 60
    support_material_threshold = 40
    support_material_xy_distance = 1.4
    support_material_z_distance = 0.15
    support_material_z_gap_layers = 0.22mm
    support_type = LINES
    temperature = 200
    thin_walls = 1
    threads = 2
    toolchange_gcode =
    top_infill_extrusion_width = 0
    top_solid_infill_speed = 50
    top_solid_layers = 1.6mm
    travel_speed = 300
    use_firmware_retraction = 0
    use_relative_e_distances = 0
    vibration_limit = 0
    wipe = 1
    wipe_shield_distance = 0
    wipe_tower_size = 0
    z_can_be_negative = 0
    z_offset = 0
     

    Attached Files:

    #1 Eliseo Gonzalez, Feb 25, 2020
    Last edited: Feb 25, 2020
  2. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
    Staff Member

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    Stringy prints are usually the result of interactions between temperature and retraction. Try increasing retraction lengths or set coasting values higher. I do not use MatterControl so I don't know exactly where those settings are of if they even exist in that software.
     
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

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    Ditto what @WheresWaldo said.

    There are three main factors in stringing:
    1) retraction
    2) extrusion temperature
    3) filament type

    Adjust retraction to be more... double or triple what you have now and see.
    If that doesn't sort it, try bringing your temperature down*.
    Lastly some filaments are more pron to stringing that others so consider a different one -- not the normal ones (PLA/ABS) those you can sort with settings.

    Also not a mattercontrol user so if you don't know how to do this you might want to look through their docs: http://wiki.mattercontrol.com/Main_Page

    *unless this is PET/PETG in which case higher might be better as those tend to be stringy when too cold
     
  4. Henradrie

    Henradrie New Member

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    Also try increasing the Z-lift. This lifts your nozzle above the print leaving some filament behind.

    Don't be tempted to increase your retraction speed. After 40mm/s I started having issues with grinding.

    Sent from my SM-A705W using Tapatalk
     

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