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chrisx86

blobbing on prints

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DSC07741.thumb.jpg.a4c1d43bc844e2dc783e2ab56fb2da93.jpg

Hi,

When printing I get this kind of blobbing on my prints, you can see them on the left and right sides of the picture.

I watched the printer closely and found out that this happens when the printer is moving up in z axis.. in that friction of a second when the printhead stands still, a little bit of plastic drips out of the nozzle and causes these blobbs.

Have you got any suggestion what I could do?

I am using latest slic3r and marlin firmware, here are my slic3r settings.

Thanks,

Chris

# generated by Slic3r 0.9.3 on Mon Oct 15 22:04:41 2012
acceleration = 0
bed_size = 200,200
bed_temperature = 0
bridge_fan_speed = 100
bridge_flow_ratio = 1
bridge_speed = 80
brim_width = 0
complete_objects = 0
cooling = 1
disable_fan_first_layers = 1
duplicate = 1
duplicate_distance = 6
duplicate_grid = 1,1
end_gcode = M104 S0		; turn off temperature
G28 X0		; home X axis
M84		; turn off motors
M107 ; turn fan off
external_perimeter_speed = 40
extra_perimeters = 1
extruder_clearance_height = 20
extruder_clearance_radius = 20
extruder_offset = 0x0
extrusion_axis = E
extrusion_multiplier = 1
extrusion_width = 0
fan_always_on = 1
fan_below_layer_time = 60
filament_diameter = 2.86
fill_angle = 45
fill_density = 0
fill_pattern = rectilinear
first_layer_bed_temperature = 0
first_layer_extrusion_width = 200%
first_layer_height = 0.32
first_layer_speed = 25%
first_layer_temperature = 210
g0 = 0
gcode_arcs = 0
gcode_comments = 0
gcode_flavor = reprap
infill_acceleration = 50
infill_every_layers = 1
infill_extruder = 1
infill_extrusion_width = 0
infill_speed = 80
layer_gcode = 
layer_height = 0.32
max_fan_speed = 100
min_fan_speed = 35
min_print_speed = 10
notes = 
nozzle_diameter = 0.4
only_retract_when_crossing_perimeters = 0
output_filename_format = [input_filename_base].gcode
perimeter_acceleration = 25
perimeter_extruder = 1
perimeter_extrusion_width = 0
perimeter_speed = 50
perimeters = 2
post_process = 
print_center = 100,100
randomize_start = 1
retract_before_travel = 5
retract_length = 2
retract_length_toolchange = 3
retract_lift = 0
retract_restart_extra = 0
retract_restart_extra_toolchange = 0
retract_speed = 50
rotate = 0
scale = 1
skirt_distance = 6
skirt_height = 1
skirts = 1
slowdown_below_layer_time = 10
small_perimeter_speed = 40
solid_fill_pattern = rectilinear
solid_infill_below_area = 70
solid_infill_every_layers = 0
solid_infill_speed = 80
solid_layers = 3
start_gcode = G28 ; home all axes
M92 X79.1597666 ; calibrate X
M92 Y79.1597666 ; calibrate Y
M92 Z533.33333333 ; calibrate Z
M92 E840 ; calibrate E 556
support_material = 0
support_material_angle = 0
support_material_extruder = 1
support_material_extrusion_width = 0
support_material_pattern = rectilinear
support_material_spacing = 2.5
support_material_threshold = 45
temperature = 210
threads = 2
top_solid_infill_speed = 50
travel_speed = 200
use_relative_e_distances = 0
z_offset = 0

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Ok.. this seems to be a software problem.

I used cura the first time today, and I had 0 blobbing at this square print. I will definitely stick to cura from now on, even though I had experience with slic3r and it's settings, cura's quality just blows me away..

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