MK3S Plotter pen mount

prusaprinters

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 instructionsJust slice and print, or use the provided gcode.