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martin.m25
(@martin-m25)
Estimable Member
really FAST profile?

Hi,
I just designed a microscope stand, which would take near 20 hours on my MK2S with the "0.20mm NORMAL" profile. As there is little detail on the model, I switched to "0.35mm FAST", started the print and went out. When I came back home, there was a HUGE mess and the hotend jammed. As someone calcualted here https://shop.prusa3d.com/forum/print-tips-slic3r-settings-kisslicer-model-repair--f12/slic3r-0-35mm-fast-profile-t5603.html , this profile can't possibly work as the extrusion flow is far too high for the E3D V6 hotend. I wonder why the put such nonsense in there - after all its Slic3r Prusa Edition! After taking apart extruder, hotend... and cleaning up the mess, I modified the speed settings and extrusion width to a flow of max. 10 mm^3/s. The print ran through (Prusa's silver PLA), but I got some delaminations on the top layer (see images). Anyone has an idea what causes this?

So as the original Prusa 0.35 mm FAST profile is nonsense, does anyone have a tip how to achieve fastest possible printing for parts not requiring fine details (and preferably the 0.4 mm nozzle)? As I understand it, the hotend flow is the limiting factor, so mounting a larger nozzle not necessarily gets more throughput. Mounting a Volcano seems to be a major undertaking with other drawbacks (like general print quality). Is there a working fast profile somewhere out there?

Thanks - Martin

- Martin...
Posted : 14/10/2017 7:13 pm
lee.g
(@lee-g)
Estimable Member
Re: really FAST profile?

My fast profile works well. I have used it quite a few times without any failures.

Make sure the perimeters are set to 3 or you will get witness marks on inner and outer walls.

I set my seam position to the rear which most of the time aligns them all in one location.

If you have very low infill density it can show up surface imperfections like on your model so I would either increase the infill density or increase the number of top layers.

I normally use 20% infill with 4 top layers and this works for me.

...
Posted : 15/10/2017 1:15 pm
PJR
 PJR
(@pjr)
Moderator
Re: really FAST profile?

Just drop the layer height to 0.3mm and increase the temp by 5 degrees (or maybe 10, if you want to print fast), keep infill down to maybe 5%, reduce perimeters to 2 and top/bottom layers to 3 (or maybe 2).

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…...
Posted : 15/10/2017 1:24 pm
martin.m25
(@martin-m25)
Estimable Member
Topic starter answered:
Re: really FAST profile?

@lee - My fast profile works well. great... would you mind sharing your settings?

BTW PrusaControl also has a "draft" mode - you can see the settings in the .json file here:
https://github.com/prusa3d/PrusaControl/blob/master/data/materials_i3_mk2.json

"draft": {
"first": 0,
"sort": 5,
"name": "draft",
"label": "Draft - 0.3 mm",
"parameters": {
"layer_height": 0.3,
"perimeters" : 2,
"top_solid_layers" : 4,
"bottom_solid_layers": 3,
"solid_infill_speed": 60,
"top_solid_infill_speed": 50,
"top_infill_extrusion_width": 0.43,
"external_perimeter_extrusion_width": 0.43,
"extrusion_width": 0.6,
"infill_extrusion_width": 0.7,
"perimeter_extrusion_width": 0.7,
"solid_infill_extrusion_width": 0.7
}

- Martin

- Martin...
Posted : 19/10/2017 5:15 pm
lee.g
(@lee-g)
Estimable Member
Re: really FAST profile?

Here are my settings. I think this can still be improved by maybe decreasing the infill overlap to 15%.

avoid_crossing_perimeters = 0
bed_shape = 0x0,250x0,250x210,0x210
bed_temperature = 55
before_layer_gcode =
bottom_solid_layers = 3
bridge_acceleration = 1000
bridge_angle = 0
bridge_fan_speed = 100
bridge_flow_ratio = 0.95
bridge_speed = 20
brim_width = 0
clip_multipart_objects = 0
complete_objects = 0
cooling = 1
default_acceleration = 1000
deretract_speed = 0
disable_fan_first_layers = 1
dont_support_bridges = 1
duplicate_distance = 6
elefant_foot_compensation = 0
end_filament_gcode = "; Filament-specific end gcode \n;END gcode for filament\n"
end_gcode = G4 ; wait\nM104 S0 ; turn off temperature\nM140 S0 ; turn off heatbed\nM107 ; turn off fan\nG1 X0 Y200; home X axis\nM84 ; disable motors
ensure_vertical_shell_thickness = 1
external_fill_pattern = rectilinear
external_perimeter_extrusion_width = 0.6
external_perimeter_speed = 30
external_perimeters_first = 0
extra_perimeters = 0
extruder_clearance_height = 20
extruder_clearance_radius = 20
extruder_colour = ""
extruder_offset = 0x0
extrusion_axis = E
extrusion_multiplier = 1
extrusion_width = 0.45
fan_always_on = 1
fan_below_layer_time = 100
filament_colour = #FF14E2
filament_cost = 0
filament_density = 0
filament_diameter = 1.75
filament_max_volumetric_speed = 0
filament_notes = "List of materials tested with standart PLA print settings for MK2:\n\nEsun PLA\nFiberlogy HD-PLA\nFillamentum PLA\nFloreon3D\nHatchbox PLA\nPlasty Mladeč PLA\nPrimavalue PLA\nProto pasta Matte Fiber"
filament_settings_id =
filament_soluble = 0
filament_type = PLA
fill_angle = 45
fill_density = 20%
fill_pattern = cubic
first_layer_acceleration = 1000
first_layer_bed_temperature = 55
first_layer_extrusion_width = 0.42
first_layer_height = 0.2
first_layer_speed = 70%
first_layer_temperature = 215
gap_fill_speed = 20
gcode_comments = 0
gcode_flavor = reprap
infill_acceleration = 2000
infill_every_layers = 1
infill_extruder = 1
infill_extrusion_width = 0.7
infill_first = 0
infill_only_where_needed = 0
infill_overlap = 25%
infill_speed = 60
interface_shells = 0
layer_gcode =
layer_height = 0.35
max_fan_speed = 100
max_layer_height = 0.25
max_print_speed = 100
max_volumetric_extrusion_rate_slope_negative = 0
max_volumetric_extrusion_rate_slope_positive = 0
max_volumetric_speed = 0
min_fan_speed = 85
min_layer_height = 0.07
min_print_speed = 15
min_skirt_length = 4
notes =
nozzle_diameter = 0.4
octoprint_apikey =
octoprint_host =
only_retract_when_crossing_perimeters = 0
ooze_prevention = 0
output_filename_format = [input_filename_base].gcode
overhangs = 1
perimeter_acceleration = 800
perimeter_extruder = 1
perimeter_extrusion_width = 0.43
perimeter_speed = 40
perimeters = 3
post_process =
print_settings_id =
printer_notes =
printer_settings_id =
raft_layers = 0
resolution = 0
retract_before_travel = 1
retract_before_wipe = 0%
retract_layer_change = 1
retract_length = 0.8
retract_length_toolchange = 3
retract_lift = 0.3
retract_lift_above = 1
retract_lift_below = 199
retract_restart_extra = 0
retract_restart_extra_toolchange = 0
retract_speed = 35
seam_position = rear
serial_port =
serial_speed = 250000
single_extruder_multi_material = 0
skirt_distance = 2
skirt_height = 1
skirts = 1
slowdown_below_layer_time = 25
small_perimeter_speed = 20
solid_infill_below_area = 0
solid_infill_every_layers = 0
solid_infill_extruder = 1
solid_infill_extrusion_width = 0.7
solid_infill_speed = 60
spiral_vase = 0
standby_temperature_delta = -5
start_filament_gcode = "; Filament gcode\n"
start_gcode = M115 U3.0.09 ; tell printer latest fw version\n M83 ; extruder relative mode\n G1 X0 Y0 Z80; home X axis\n M109 S170 ; heat nozzle to 170\n M140 S[first_layer_bed_temperature] ; set bed temp\n M190 S[first_layer_bed_temperature] ; wait for bed temp\n G28 W ; home all without mesh bed level\n M104 S[first_layer_temperature] ; set extruder temp\n G80 ; mesh bed leveling\n G1 X0 Y0 Z40; lift nozzle to 40 while heating\n M109 S[first_layer_temperature] ; wait for extruder temp\n G1 X0 Y0 Z0.2; lower Z to prepare for intro line\n G1 Y-3.0 F1000.0 ; go outside print area\n G1 X60.0 E9.0 F1000.0 ; intro line\n G1 X100.0 E12.5 F1000.0 ; intro line
support_material = 1
support_material_angle = 30
support_material_buildplate_only = 1
support_material_contact_distance = 0
support_material_enforce_layers = 0
support_material_extruder = 1
support_material_extrusion_width = 0.35
support_material_interface_contact_loops = 0
support_material_interface_extruder = 1
support_material_interface_layers = 3
support_material_interface_spacing = 0.2
support_material_interface_speed = 100%
support_material_pattern = rectilinear
support_material_spacing = 2
support_material_speed = 50
support_material_synchronize_layers = 0
support_material_threshold = 35
support_material_with_sheath = 0
support_material_xy_spacing = 60%
temperature = 210
thin_walls = 0
threads = 4
toolchange_gcode =
top_infill_extrusion_width = 0.43
top_solid_infill_speed = 50
top_solid_layers = 4
travel_speed = 100
use_firmware_retraction = 0
use_relative_e_distances = 1
use_volumetric_e = 0
variable_layer_height = 1
wipe = 1
wipe_tower = 0
wipe_tower_per_color_wipe = 15
wipe_tower_width = 60
wipe_tower_x = 180
wipe_tower_y = 140
xy_size_compensation = 0
z_offset = 0

...
Posted : 19/10/2017 9:24 pm
MrMik
(@mrmik)
Honorable Member
Re: really FAST profile?

You can get the 40W heater element instead of 30W.

...
Posted : 20/10/2017 2:10 pm
david.b14
(@david-b14)
Honorable Member
Re: really FAST profile?

Some thoughts, I mainly do functional printing.

- Printing at 3.0 can be done if the model is simple, but I use a 2.6 layer height for my go to fast profile.
- Infill %15 percent, maybe 30% if the model is very complex w/ respect to bridges
- Have two working printers, even if the second one has a small print area. That way you are slicing, prepping, cleaning, sanding parts while other parts are being printed.
- Figure out a way to not have supports. Super glue and a soldering iron set at 190C for plastic welding can be faster method than printing w/ supports.

...
Posted : 29/10/2017 2:03 pm
martin.m25
(@martin-m25)
Estimable Member
Topic starter answered:
Re: really FAST profile?

Thanks david - but what do you mean with "printing at 3.0"? Do you mean layer height 0.3 mm?

BTW what about the volcano? - it seems that it would solve the problem of hotend throughput. But there are very few references of people using it, both in this forum and the rest of the WWW.

I think a second printer would be a good idea, I'd try putting the volcano on that, but on the other hand I have way too much stuff laying around and I really try to reduce my equipment....
Maybe one could make a swappable printhead, one with the regular hotend and 0.4 mm nozzle and another with volcano and 0.8 mm. All electrical connections would need to go to a connector (Motor: 4; PINDA 4; Fans 6? Filament sensor 4? hotend 4 makes 22) so one could easily swap it. Of course this increases weight and decreases mechanical stability, but would save the hassle of maintaining two different printers.

- Martin...
Posted : 29/10/2017 5:33 pm
david.b14
(@david-b14)
Honorable Member
Re: really FAST profile?

Correction. I meant to write .26 layer height vs .30 layer height.

Have a look at this:

I wonder if you go with the volcano if your parts may not fit as well, for example if you are printing gears.

...
Posted : 31/10/2017 12:19 am
martin.m25
(@martin-m25)
Estimable Member
Topic starter answered:
Re: really FAST profile?

Interesting video, though lots of guesswork...
Regarding the volcano: It seems that it has an extrusion flow of max. 40 mm^3/s vs 15 mm^3 (v6). That‘s a 2.67 times increase. Distributing this evenly to layer height, width and speed gives a 39% increase for either of those numbers. So from 0.26 mm layer height to 0.36 mm, from 0.6 mm extrusion width to 0.83 mm and from 50 mm/s to 70 mm/s, nozzle 0.56 (lets say 0.6 mm). I think this could still be useful for many mechanical prints (I really love my Adalinda, but there‘s s limit on how many dragons fit on one‘s desk). One thing I really have no idea is how print speed affects print quality (again, not talking about fine details, but more mechanical like layer adhesion).

Gears: How do you make gears? I used the woodgears generator for some tests, import DXF in Alibre Design and linear extrude to make straight gears (I did not yet try helical or herringbone teeth). So far tried 2, 3 and 4 mm tooth spacing, 3 will probably work best.

- Martin...
Posted : 02/11/2017 6:10 pm
martin.m25
(@martin-m25)
Estimable Member
Topic starter answered:
Re: really FAST profile?

Interesting video, though lots of guesswork...
Regarding the volcano: It seems that it has an extrusion flow of max. 40 mm^3/s vs 15 mm^3 (v6). That‘s a 2.67 times increase. Distributing this evenly to layer height, width and speed gives a 39% increase for either of those numbers. So from 0.26 mm layer height to 0.36 mm, from 0.6 mm extrusion width to 0.83 mm and from 50 mm/s to 70 mm/s, nozzle 0.56 (lets say 0.6 mm). I think this could still be useful for many mechanical prints (I really love my Adalinda, but there‘s s limit on how many dragons fit on one‘s desk). One thing I really have no idea is how print speed affects print quality (again, not talking about fine details, but more mechanical like layer adhesion).

Gears: How do you make gears? I used the woodgears generator for some tests, import DXF in Alibre Design and linear extrude to make straight gears (I did not yet try helical or herringbone teeth). So far tried 2, 3 and 4 mm tooth spacing, 3 will probably work best.

- Martin...
Posted : 02/11/2017 6:10 pm
ron
 ron
(@ron)
Estimable Member
Re: really FAST profile?

I stopped using 0.35mm height long ago.
I'm using 0.30mm. And I think I will go to 0.25mm as with new Linear Advance feature, the speed can be increased and the maximum volumetric speed reach quite easily as I use PETG mainly and target 10mm3/s.
Below are my settings. I still have to improve top solid infill (as I still having issues with large flat surface like you) and support.

You can get the 40W heater element instead of 30W.
How much did you increased the volumetric speed? Is there any data from Prusa or E3D?

# generated by Slic3r 1.37.2-prusa3d-win64 on Wed Nov 8 23:16:59 2017
avoid_crossing_perimeters = 0
bottom_solid_layers = 4
bridge_acceleration = 1000
bridge_angle = 0
bridge_flow_ratio = 0.95
bridge_speed = 30
brim_width = 0
clip_multipart_objects = 0
complete_objects = 0
default_acceleration = 1000
dont_support_bridges = 1
elefant_foot_compensation = 0.25
ensure_vertical_shell_thickness = 1
external_fill_pattern = rectilinear
external_perimeter_extrusion_width = 0.55
external_perimeter_speed = 45
external_perimeters_first = 0
extra_perimeters = 0
extruder_clearance_height = 20
extruder_clearance_radius = 20
extrusion_width = 0.45
fill_angle = 45
fill_density = 20%
fill_pattern = cubic
first_layer_acceleration = 1000
first_layer_extrusion_width = 0.42
first_layer_height = 0.2
first_layer_speed = 35
gap_fill_speed = 60
gcode_comments = 0
infill_acceleration = 2000
infill_every_layers = 1
infill_extruder = 1
infill_extrusion_width = 0.55
infill_first = 0
infill_only_where_needed = 0
infill_overlap = 20%
infill_speed = 57
interface_shells = 0
layer_height = 0.3
max_print_speed = 100
max_volumetric_extrusion_rate_slope_negative = 0
max_volumetric_extrusion_rate_slope_positive = 0
max_volumetric_speed = 0
min_skirt_length = 4
notes =
only_retract_when_crossing_perimeters = 0
ooze_prevention = 0
output_filename_format = [input_filename_base]-[P][print_preset]-[F][filament_preset]-[P][printer_preset]-[version]-[timestamp].gcode
overhangs = 1
perimeter_acceleration = 800
perimeter_extruder = 1
perimeter_extrusion_width = 0.45
perimeter_speed = 60
perimeters = 3
post_process =
print_settings_id =
raft_layers = 0
resolution = 0
seam_position = nearest
skirt_distance = 2
skirt_height = 1
skirts = 1
small_perimeter_speed = 30
solid_infill_below_area = 0
solid_infill_every_layers = 0
solid_infill_extruder = 1
solid_infill_extrusion_width = 0.55
solid_infill_speed = 57
spiral_vase = 0
standby_temperature_delta = -5
support_material = 1
support_material_angle = 0
support_material_buildplate_only = 0
support_material_contact_distance = 0.15
support_material_enforce_layers = 0
support_material_extruder = 1
support_material_extrusion_width = 0.35
support_material_interface_contact_loops = 0
support_material_interface_extruder = 1
support_material_interface_layers = 1
support_material_interface_spacing = 0
support_material_interface_speed = 100%
support_material_pattern = pillars
support_material_spacing = 3.5
support_material_speed = 60
support_material_synchronize_layers = 0
support_material_threshold = 45
support_material_with_sheath = 0
support_material_xy_spacing = 60%
thin_walls = 0
threads = 4
top_infill_extrusion_width = 0.45
top_solid_infill_speed = 30
top_solid_layers = 4
travel_speed = 120
wipe_tower = 0
wipe_tower_per_color_wipe = 15
wipe_tower_width = 60
wipe_tower_x = 180
wipe_tower_y = 140
xy_size_compensation = 0

...
Posted : 16/11/2017 1:30 am
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