Prusa MK3s face shields Print with auto-eject mode

prusaprinters

<p>I was thinking during the weekend how I can reduce the printer off time during the night for visors production. I didn't want to try stacking files ( too lazy to do the post treatment ^^) so I decided to modify the Gcode to create an auto ejection process at the end of the print. I use PS material and let the bed cool down to 50°C before the head knocks off the parts from the bed.<br/> The PVC sheet is attach to the 3 front bed screws.</p> <p> <figure class="media"> <oembed url="https://www.youtube.com/watch?v=FKf7I6Qsywo"></oembed> </figure> </p> <p>The visor model is the sweden version (6 holes) from 3DVerkstan on youmagine</p> <p><a href="https://www.youmagine.com/designs/protective-visor-by-3dverkstan?fbclid=IwAR1-6nA1e_tEy5wZtD60zkEOT7kuUaRx41mV_JpVkianZs5Uwz7NVafZV3Y">https://www.youmagine.com/designs/protective-visor-by-3dverkstan?fbclid=IwAR1-6nA1e_tEy5wZtD60zkEOT7kuUaRx41mV_JpVkianZs5Uwz7NVafZV3Y</a></p> <p>I got inspired by a video from Make anything for the gcode.<br/> <figure class="media"> <oembed url="https://www.youtube.com/watch?v=avlengYsJdw"></oembed> </figure> </p> <p>The Gcode is ready to print 10 plate of 2 visors non-stop if you use PS material as this one:<br/> <a href="https://www.kimya.fr/fr/produit/filament-3d-hips-r-kimya/">https://www.kimya.fr/fr/produit/filament-3d-hips-r-kimya/</a><br/> Otherwise you have to regenerate the gcode with the good temperatures.<br/> Let me know in the comments if you want more details</p> <p>Edit:<br/> First run overnight without issue. 12 visors frame ready to be assembled<br/> Add start gcode with limited purge before print</p> <h3>Print instructions</h3><p>Start Gcode:</p> <p>M862.3 P "[printer_model]" ; printer model check<br/> M862.1 P[nozzle_diameter] ; nozzle diameter check<br/> M115 U3.8.1 ; tell printer latest fw version<br/> G90 ; use absolute coordinates<br/> M83 ; extruder relative mode<br/> M104 S[first_layer_temperature] ; set extruder temp<br/> M140 S[first_layer_bed_temperature] ; set bed temp<br/> M190 S[first_layer_bed_temperature] ; wait for bed temp<br/> M109 S[first_layer_temperature] ; wait for extruder temp<br/> G28 W ; home all without mesh bed level<br/> G80 ; mesh bed leveling<br/> G1 E2<br/> G92 E0.0<br/> M221 S{if layer_height&lt;0.075}100{else}95{endif}</p> <p>End Gcode:</p> <p>G4 ; wait<br/> M104 S0 ; turn off temperature<br/> M140 S0 ; turn off heatbed<br/> M107 ; turn off fan<br/> ; Lift print head a bit<br/> {if layer_z &lt; max_print_height}G1 Z{z_offset+min(layer_z+30, max_print_height)}{endif} ; Move print head up<br/> G1 X0 Y200 F3000 ; home X axis<br/> M190 R50 ; Wait for bed to cool down to 50<br/> G1 X50 Y210 Z1 F2000 ; First move to knock the part off the bed<br/> G1 X50 Y0 Z1 F2000<br/> G1 X50 Y210 Z1 F2000<br/> G1 X150 Y210 Z1 F2000 ; second move to knock the part off the bed<br/> G1 X150 Y0 Z1 F2000<br/> G1 X150 Y0 Z15 F2000<br/> G1 X150 Y210 Z15 F2000 ; Check bed<br/> G1 X150 Y180 Z15 F6000 ; Check bed<br/> G1 X150 Y210 Z15 F6000 ; Check bed<br/> M84 ; disable motors</p>