MK3S Plotter pen mount

I created this file so that I could mount a pen to the extruder motor of my MK3S. It simply slides onto the motor. The pen is attached with rubber bands in the provided slots so that it can slide up and down to account for slight bed level differences.

I use PrusaSlicer to generate the gcode for prints. You simply need an stl that is .2mm high. I will paste my config bundle below. I'm pretty sure all you need to do is create a new .ini file and paste it in.

To hold the paper in place, you can use either magnets or tape.

I have also created a new steel sheet named plotter. I used the smooth steel sheet and set the live Z to 0. This keeps the nozzle clear and lets me set the pen to be just below the nozzle. I have my settings do a Z hop of 2.5mm. You basically want to set the pen to not touch at 2.5mm but touch at about 1mm. It is pretty much guess and check on a scrap piece of paper.

Here is the config.ini file

generated by PrusaSlicer 2.3.0-alpha2+ on 2020-12-10 at 21:34:20 UTC

[print:MK3S Plotter]

avoid_crossing_perimeters = 0

bottom_fill_pattern = rectilinear

bottom_solid_layers = 5

bottom_solid_min_thickness = 0.5

bridge_acceleration = 1000

bridge_angle = 0

bridge_flow_ratio = 0.8

bridge_speed = 30

brim_width = 0

clip_multipart_objects = 1

compatible_printers = "MK3S Plotter"

compatible_printers_condition = printer_notes=~/.PRINTER_VENDOR_PRUSA3D./ and printer_notes=~/.PRINTER_MODEL_MK3./ and nozzle_diameter[0]==0.4

complete_objects = 0

default_acceleration = 1000

dont_support_bridges = 1

draft_shield = 0

elefant_foot_compensation = 0

ensure_vertical_shell_thickness = 1

external_perimeter_extrusion_width = 0

external_perimeter_speed = 25

external_perimeters_first = 0

extra_perimeters = 1

extruder_clearance_height = 20

extruder_clearance_radius = 45

extrusion_width = 0

fill_angle = 45

fill_density = 100%

fill_pattern = rectilinear

first_layer_acceleration = 1000

first_layer_extrusion_width = 0

first_layer_height = 0.2

first_layer_speed = 100%

gap_fill_speed = 40

gcode_comments = 0

gcode_label_objects = 0

infill_acceleration = 1000

infill_every_layers = 1

infill_extruder = 1

infill_extrusion_width = 0

infill_first = 0

infill_only_where_needed = 0

infill_overlap = 25%

infill_speed = 80

inherits = 0.15mm QUALITY @MK3

interface_shells = 0

ironing = 0

ironing_flowrate = 15%

ironing_spacing = 0.1

ironing_speed = 15

ironing_type = top

layer_height = 0.2

max_print_speed = 200

max_volumetric_speed = 0

min_skirt_length = 4

notes =

only_retract_when_crossing_perimeters = 0

ooze_prevention = 0

output_filename_format = {input_filenamebase}{layerheight}mm{filamenttype[0]}{printermodel}{print_time}.gcode

overhangs = 1

perimeter_acceleration = 800

perimeter_extruder = 1

perimeter_extrusion_width = 0

perimeter_speed = 45

perimeters = 1

post_process =

print_settings_id =

raft_layers = 0

resolution = 0

seam_position = nearest

single_extruder_multi_material_priming = 0

skirt_distance = 2

skirt_height = 3

skirts = 0

slice_closing_radius = 0.049

small_perimeter_speed = 25

solid_infill_below_area = 0

solid_infill_every_layers = 0

solid_infill_extruder = 1

solid_infill_extrusion_width = 0

solid_infill_speed = 80

spiral_vase = 0

standby_temperature_delta = -5

support_material = 0

support_material_angle = 0

support_material_auto = 0

support_material_buildplate_only = 0

support_material_contact_distance = 0.25

support_material_enforce_layers = 0

support_material_extruder = 0

support_material_extrusion_width = 0.35

support_material_interface_contact_loops = 0

support_material_interface_extruder = 0

support_material_interface_layers = 4

support_material_interface_spacing = 0.2

support_material_interface_speed = 100%

support_material_pattern = rectilinear

support_material_spacing = 3

support_material_speed = 50

support_material_synchronize_layers = 0

support_material_threshold = 55

support_material_with_sheath = 0

support_material_xy_spacing = 75%

thin_walls = 0

threads = 8

top_fill_pattern = monotonic

top_infill_extrusion_width = 0

top_solid_infill_speed = 40

top_solid_layers = 7

top_solid_min_thickness = 0.6

travel_speed = 180

wipe_tower = 1

wipe_tower_bridging = 10

wipe_tower_no_sparse_layers = 0

wipe_tower_rotation_angle = 0

wipe_tower_width = 60

wipe_tower_x = 170

wipe_tower_y = 125

xy_size_compensation = 0

[filament:PEN]

bed_temperature = 0

bridge_fan_speed = 50

compatible_printers = "MK3S Plotter"

compatible_printers_condition = printer_model!="MK2SMM" and printer_model!="MINI" and ! (printer_notes=~/.PRINTER_VENDOR_PRUSA3D./ and printer_notes=~/.PRINTER_MODEL_MK(2.5|3)./ and single_extruder_multi_material)

compatible_prints = "MK3S Plotter"

compatible_prints_condition =

cooling = 0

disable_fan_first_layers = 3

end_filament_gcode = "; Filament-specific end gcode"

extrusion_multiplier = 1

fan_always_on = 0

fan_below_layer_time = 20

filament_colour = #0F80FF

filament_cooling_final_speed = 3.4

filament_cooling_initial_speed = 2.2

filament_cooling_moves = 4

filament_cost = 43

filament_density = 1.27

filament_deretract_speed = nil

filament_diameter = 1.75

filament_load_time = 0

filament_loading_speed = 28

filament_loading_speed_start = 3

filament_max_volumetric_speed = 8

filament_minimal_purge_on_wipe_tower = 15

filament_notes = ""

filament_ramming_parameters = "120 100 6.6 6.8 7.2 7.6 7.9 8.2 8.7 9.4 9.9 10.0| 0.05 6.6 0.45 6.8 0.95 7.8 1.45 8.3 1.95 9.7 2.45 10 2.95 7.6 3.45 7.6 3.95 7.6 4.45 7.6 4.95 7.6"

filament_retract_before_travel = nil

filament_retract_before_wipe = nil

filament_retract_layer_change = nil

filament_retract_length = 1.4

filament_retract_lift = 1.5

filament_retract_lift_above = nil

filament_retract_lift_below = nil

filament_retract_restart_extra = nil

filament_retract_speed = nil

filament_settings_id = ""

filament_soluble = 0

filament_toolchange_delay = 0

filament_type = PEN

filament_unload_time = 0

filament_unloading_speed = 90

filament_unloading_speed_start = 100

filament_vendor = Generic

filament_wipe = nil

first_layer_bed_temperature = 0

first_layer_temperature = 0

inherits = Generic PETG

max_fan_speed = 50

min_fan_speed = 30

min_print_speed = 15

slowdown_below_layer_time = 20

start_filament_gcode = "M900 K{if printer_notes=~/.PRINTER_HAS_BOWDEN./}200{elsif nozzle_diameter[0]==0.6}24{else}45{endif} ; Filament gcode"

temperature = 0

[printer:MK3S Plotter]

bed_custom_model =

bed_custom_texture =

bed_shape = 0x0,250x0,250x210,0x210

before_layer_gcode = ;BEFORE_LAYER_CHANGE\nG92 E0.0\n;[layer_z]\n\n

between_objects_gcode =

color_change_gcode = M600

cooling_tube_length = 5

cooling_tube_retraction = 91.5

default_filament_profile = "Prusament PLA"

default_print_profile = 0.15mm QUALITY @MK3

deretract_speed = 0

end_gcode = G4 ; wait\n{if layer_z < max_print_height}G1 Z{z_offset+min(layer_z+30, max_print_height)}{endif} ; Move print head up\nG1 X0 Y200 F3000 ; home X axis\nM84 ; disable motors

extra_loading_move = -2

extruder_colour = ""

extruder_offset = -42x-48

gcode_flavor = marlin

high_current_on_filament_swap = 0

host_type = octoprint

inherits = Original Prusa i3 MK3S

layer_gcode = ;AFTER_LAYER_CHANGE\n;[layer_z]

machine_limits_usage = emit_to_gcode

machine_max_acceleration_e = 5000,5000

machine_max_acceleration_extruding = 1250,1250

machine_max_acceleration_retracting = 1250,1250

machine_max_acceleration_x = 1000,960

machine_max_acceleration_y = 1000,960

machine_max_acceleration_z = 1000,1000

machine_max_feedrate_e = 120,120

machine_max_feedrate_x = 200,100

machine_max_feedrate_y = 200,100

machine_max_feedrate_z = 12,12

machine_max_jerk_e = 4.5,4.5

machine_max_jerk_x = 8,8

machine_max_jerk_y = 8,8

machine_max_jerk_z = 0.4,0.4

machine_min_extruding_rate = 0,0

machine_min_travel_rate = 0,0

max_layer_height = 0.25

max_print_height = 210

min_layer_height = 0.07

nozzle_diameter = 0.2

parking_pos_retraction = 92

pause_print_gcode = M601

print_host =

printer_model = MK3S

printer_notes = Don't remove the following keywords! These keywords are used in the "compatible printer" condition of the print and filament profiles to link the particular print and filament profiles to this printer profile.\nPRINTER_VENDOR_PRUSA3D\nPRINTER_MODEL_MK3\n

printer_settings_id =

printer_technology = FFF

printer_variant = 0.4

printer_vendor =

printhost_apikey =

printhost_cafile =

remaining_times = 1

retract_before_travel = 0.5

retract_before_wipe = 0%

retract_layer_change = 1

retract_length = 0.8

retract_length_toolchange = 4

retract_lift = 2.5

retract_lift_above = 0

retract_lift_below = 209

retract_restart_extra = 0

retract_restart_extra_toolchange = 0

retract_speed = 35

serial_port =

serial_speed = 250000

silent_mode = 1

single_extruder_multi_material = 0

start_gcode = M862.3 P "[printer_model]" ; printer model check\nM115 U3.8.1 ; tell printer latest fw version\nG90 ; use absolute coordinates\nG28 W ; home all without mesh bed level\nG0 Z5\nM117 Drawing..

template_custom_gcode =

thumbnails =

toolchange_gcode =

use_firmware_retraction = 0

use_relative_e_distances = 1

use_volumetric_e = 0

variable_layer_height = 1

wipe = 1

z_offset = 0

[presets]

print = MK3S Plotter

sla_print =

sla_material =

printer = MK3S Plotter

filament = PEN

physical_printer =

Print instructions

Just slice and print, or use the provided gcode.

Design and description by japhillips87 , licensed CC-BY-SA.