Prusa i3 MK2S User Manual Download Page 1

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Summary of Contents for i3 MK2S

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Page 2: ...install the drivers page 37 4 Calibrate the printer by following our calibration flow page 11 5 Insert the SD into the printer and print your first model page 26 Important notice tip hint or information that helps you print with ease Read carefully This part of text has the uppermost importance either for user safety of for a proper printer service This symbol indicates text related to a printer k...

Page 3: ...a i3 the third iteration of the original 3D printer It is constantly updated with the latest innovations and you ve just purchased its latest version In addition to printer hardware upgrades the main goal is to make the technology more accessible and understandable to all users Josef Prusa also organizes workshops for the public participates in professional conferences dedicated to the popularizat...

Page 4: ...resolution kit only 16 6 3 5 1 Y axis alignment kit only 19 6 3 6 Calibrate Z 19 6 3 7 Mesh bed levelling 20 6 3 8 Loading the filament into the extruder 21 6 3 8 1 Unloading the filament 22 6 3 9 First layer calibration kit only 22 6 3 9 1 Bed level correction kit only 23 6 3 10 Fine tuning the first layer 23 6 3 10 1 Print prusa logo 23 6 3 10 2 Check probe height kit only 24 7 Printing 25 7 1 R...

Page 5: ...rials 48 12 FAQ Printer maintenance and print issues 49 12 1 Regular maintenance 49 12 1 1 Bearings 49 12 1 2 Fans 49 12 1 3 Extruder drive gear 49 12 1 4 Electronics 49 12 1 5 PEI rejuvenation 49 12 1 Print surface preparation 50 12 2 Clogged jammed extruder 50 12 3 Nozzle cleaning 50 12 4 Replacing changing the nozzle 51 12 5 Printing problems 53 12 5 1 Layers break and split when printing from ...

Page 6: ...all hardware tweaks for easier assembly and improved reliability Please check the http prusa3d com drivers page for updated version of this 3D printing hanbook PDF download In case of any printer related problem do not hesitate to contact us at info prusa3d com We are glad to receive all your valuable comments and tips We strongly suggest you to visit our official forum at forum prusa3d com where ...

Page 7: ...damage Make sure that the power cord is not mechanically or otherwise damaged Stop using damaged cable immediately and replace it 5 When you disconnect the power cord from the socket pull the plug rather than the cord to reduce the risk of damage to plug or AC outlet 6 Never disassemble the printer power supply it does not contain any parts that could be repaired by an unskilled worker All repairs...

Page 8: ...rints 3D printers use two different diameters of a filament you can find more in chapter Materials 2 85 mm and 1 75 mm 1 75mm version is used more worldwide though there is no difference in printing quality Filament is provided on a spool where you can find the basic information filament maker material ABS PLA etc and filament diameter 2 85 mm filament is commonly called as 3 mm This printer suppo...

Page 9: ... in chapter 6 2 Printer assembly We offer the support for users who purchased the printer kit through our official forum If you need help do not hesitate to visit our forum at forum prusa3d com You can find the answers for your problem there If not please just post your question directly there Pict 2 Original Prusa i3 MK2S printer kit unboxed 9 ...

Page 10: ...off too Pict 3 Proper handling of a printer Both the assembled version and the kit version come with a few things you might need during the printer use USB Cable used for uploading a new firmware or alternatively printing from the computer Acupuncture needle used for cleaning the nozzle when stuck See the chapter 11 3 Nozzle cleaning for more information Glue stick Used for better Nylon adhesion o...

Page 11: ...er to a horizontally stable position best place is a workbench where there is no risk of draft Attach the filament holders to the upper frame Attach Filament to the holders Make sure the filament spool doesn t jam and can move freely Plug in the AC power cord check to make sure the proper setting for AC voltage is selected 110V 220V and turn on the switch Check out the firmware version in the Supp...

Page 12: ... Calibrate Z to store new reference Z height values It is important to disconnect the printer USB from any computer or OctoPrint running on RaspberryPi for the whole calibration Printer will not respond to any request from the host and communication will timeout when host resets the connection the printer restarts and might end up in weird state requiring 7 2 3 Factory Reset 6 3 2 PEI print surfac...

Page 13: ...grate under the PEI and create slight bumps on the surface 6 3 3 Increasing the adhesion In some special occasions like a tall object with a very small contact area with the print surface you might need to increase the adhesion Fortunately PEI is a very chemically resistant polymer and you can temporary apply other adhesion solutions without damaging it This also applies to materials which would n...

Page 14: ...nected to the Rambo electronics and that they are not swapped Heater Thermistor Not connected Check proper wiring of hot end power cables and thermistor cables Ensure that both are properly connected to the Rambo electronics and that they are not swapped Bed Heater Wiring error Check that heatbed and hotend power cables are not swapped or thermistor cables from both hotend and heatbed are not swap...

Page 15: ...rocess power off the printer and lower the P I N D A probe slightly See the P I N D A probe response diagram in 6 3 10 2 Check probe height The paper will not affect the calibration process The nozzle must not touch the print surface or deflect the bed by any means If everything went correctly continue with the calibration process Initiating this routine performs a series of measurements in three ...

Page 16: ...led Bed calibration point was not found Calibration routine did not find a bed sensor point The printer stops close to the bed point which it failed to detect Please verify that the printer is assembled correctly that all axes move freely the pulleys do not slip and the print nozzle is clean If everything looks good re run the X Y calibration and verify with a sheet of paper between the nozzle and...

Page 17: ...t chapter 6 3 5 1 Y axis alignment 8 XYZ calibration failed Front calibration points not reachable Even if the printer moves the table to the end Y end stop the PINDA probe cannot reach the front row of the bed calibration points Move both left right Y threaded rods in the Z frame away from you You can find out how to fix this in the next chapter 6 3 5 1 Y axis alignment 9 XYZ calibration compromi...

Page 18: ...t allowed to move more than 1 mm below the reference value during the bed calibration If you moved the printer you may need to re run the Z calibration to sample new reference Z height values reflecting the twist and bend of the table surface the printer is sitting on If that does not help please verify that the PINDA probe is aligned with the sensor points on the print bed during the bed Z calibr...

Page 19: ... holder with a slot allows to make a 1 mm adjustment to both the front and the back Loosen the Y belt holder screws push the belt holder part towards the Y motor and retighten the screws 6 3 6 Calibrate Z Calibrate Z is located in Calibration menu It should be performed whenever you move the printer to different location It saves the heights of all 9 calibration points in non volatile memory Store...

Page 20: ... print nozzle then the debris may touch the print bed or even push the print bed away from the PINDA probe so the PINDA probe will not trigger properly and the calibration will fail 6 3 7 Mesh bed levelling Mesh bed levelling can be found in Calibration menu It is the same procedure which is performed before every print You can use it to check the P I N D A probe alignment with the calibration poi...

Page 21: ...tton to confirm Filament is then loaded to the extruder by the extruder stepper automatically You should cut the top of the filament as shown in the picture below p ict 6 detail Pict 6 Loading the filament to the extruder Check if the filament is flowing from the nozzle If you change the filament for a new one do not forget to completely remove the old filament before the printing by extruding the...

Page 22: ... clean You can find instructions how to clean it in the chapter 6 3 2 PEI print surface preparation Don t forget to complete 6 3 5 Calibrate XYZ chapter or you can permanently damage the print surface Now we will finally calibrate the distance between tip of the nozzle and the probe Preheat the nozzle for PLA On the LCD menu go to Print from SD and run V2calibration gcode file from the bundled SD ...

Page 23: ...ns in the first layer This feature can be found in Calibration Bed level correction For example if the first layer seems to be ever so slightly more squished on the right side you can virtually raise the nozzle by 20 microns on the right side Settings are available for Left Right Front and Back The limit is 50 microns and even 20 microns can make a huge difference When you are using this function ...

Page 24: ...ews on the probe holder to make adjustments By rotating the probe clockwise it will lower at 1mm per turn It is very handy for precise adjustments but it can also be pushed in and out when set screws are loosened completely Then try again Calibrate XYZ Keep in mind the probe must be always higher than the nozzle tip otherwise it will catch on prints Pict 10 Probe response diagram Now you are done ...

Page 25: ... model model_name gcode Printer will start printing the object The filename gcode must not contain any special characters otherwise the printer is not able to display the file on the LCD If you remove the SD while printing printer will pause automatically When you reinsert the SD press the LCD knob and choose Continue option Confirm and printing will resume 7 1 Removing objects from the printer Wh...

Page 26: ... rely on a computer 7 2 1 LCD screen Main screen is an information screen displaying the most important details These are the temperature of the nozzle and the heatbed 1 2 printing time 3 and the actual Z axis position 5 Pict 12 LCD layout 1 Nozzle temperature actual desired temperature 2 Heatbed temperature actual desired temperature 3 Progress of printing in shown only during the printing 4 Stat...

Page 27: ...r a beep 3 Release the control knob Options Language option resets the language preference Statistics will erase all the recorded print time and material from the memory Shipping prep which resets only the printer language selection All the calibration data including the Live adjust Z remain intact Even though the calibration data are still present and functional the printer will prompt user once ...

Page 28: ...during the printing process only Tune during the printing process only Speed Nozzle Bed Fan speed Flow Change filament Mode Pause print during the printing process only Stop print during the printing process only Preheat ABS 255 100 PLA 215 55 PET 240 90 HIPS 220 100 PP 254 100 FLEX 230 50 Cooldown Print from SD Load filament Unload filament Settings Temperature Nozzle Bed Fan speed Move axis Move...

Page 29: ...lect language SD card Normal FlashAir Calibration Selftest Calibrate XYZ Calibrate Z Mesh Bed Leveling Auto home Bed level correction Temperature Calibration PID Calibration Show end stops Reset XYZ calibration Statistics Support Firmware version XYZ calibration detail 29 ...

Page 30: ... do not advise to increase the speed over 200 Watch the results of increased speed on the printed model and adjust the speed eventually When increasing the speed always check the model is cooled properly especially when printing small object from ABS increased speed causes the distortion sometimes called warping of the model You can prevent this issue by printing more similar objects together laye...

Page 31: ...nnection information Next step is loading the model with Load model button and choosing the model_name gcode no special symbols in file name You can control the movement of all printer axes at the control area Next you can preheat the printer and prepare it for the printing Set the temperatures for the nozzle heater and heatbed bed and click Set button Printer starts heating immediately Always che...

Page 32: ...ing the nozzle and bed temperatures 7 Thermometer 8 Confirming the set temperatures heating start 9 2D print process preview 10 Info panel Estimated print time axis position and other info is displayed after loading the model 7 3 Printer addons 7 3 1 Different nozzles E3D a UK based company supplies hotends for the Original Prusa i3 MK2 has whole ecosystem of upgrades and addons We support some of...

Page 33: ...tend Optional In case you are experiencing wide swings in temperatures of your nozzle e g 5 C you shall do PID tuning on your printer If you are experiencing major temperature fluctuations higher than that check that your hotend thermistor is properly seated in the heater block and plugged to your miniRAMBO board first You can find this feature in Calibration PID calibration In this menu you have ...

Page 34: ...as the extruder will be moving around heatbed during this process Do not touch the nozzle or heatbed during this process until it is fully finished as it will reach high temperatures Once calibrating your PINDA probe it will be comparing its data readings under different temperatures and also on top of that it will include your Live Z data This should help you to have stable Live Z Still make sure...

Page 35: ...rom the build manual will increase the Y distance from min Pressing the button will get you to the 2nd screen This screen will identify how far you are from the perfect perpendicularity It is measuring the skew of your X Y axis Up to 0 25 Severe skew compensating for offset of 1 1 mm on 250 mm length Up to 0 12 Slight skew compensating for offset of 0 5 mm on 250 mm length Under 0 12 No need to co...

Page 36: ...in In order to improve your axis perpendicularity make sure the the distance of the front calibration points seen on the first screen is the same Pict 19 Moving one side of the frame forward increasing the measured value on the Y axis and other side backward decreasing the measured value according to the values from the first screen will improve the skew 36 ...

Page 37: ...oad under the Creative Commons Attribution Non Commercial Models not to be used commercially you must always include the name of the author or for a small fee We have selected the most interesting sites with high quality models 1 http www thingiverse com 2 https pinshape com 3 https www youmagine com 4 http www shapeways com 5 http www 123dapp com 10 2 In what program you can create your own model...

Page 38: ...ins information for nozzle movement and the amount of filament to extrude The right tool for this task and for many more is the PrusaControl program You set the printing material print quality and the print speed in PrusaControl You can manipulate the object here varying the placement on the printbed resize it etc PrusaControl is the easiest way to get perfect prints on the MK2 MK2S and should be ...

Page 39: ...ep are 0 1 inner circle step is 45 4 Auto arrange button positions objects on the print bed 5 Material selection menu 6 Quality Speed setting of a print menu 7 Infill menu 8 Supports menu 9 Reset transformation settings button 10 Position values 11 Rotation values 12 Scale values 13 Place on bed button turns on automatic placing of objects to Z 0 14 Brim On Off button 15 Model preview 16 Generate ...

Page 40: ... PE directly Pict 22 Slic3r interface 1 Add button loads models into Slic3r 2 Delete and Delete All buttons remove the model s from Slic3r 3 Opens the detailed settings of print filament and printer 4 When the model is ready for print this button generates the gcode file 5 Quality Speed setting of a print 6 Material selection 7 Printer selection 8 Right click on model opens the menu with rotate re...

Page 41: ...ommonly used as a 3D printing benchmark 10 6 Print in color with ColorPrint There is a simple way on how to create layer based multicolored 3D prints with our simple ColorPrint app Pict 24 Multicolored object printed with ColorPrint ColorPrint is now directly integrated into the PrusaControl and filament changes can be added when the gcode is already generated before saving it to the file Web Colo...

Page 42: ...splays the height of individual layers Set this number to the box Number of these changes is unlimited When you are done with your modification download the file This file is ready to be printed Pict 25 Web version of Colorprint interface at prusaprinters org colorprint Insert the filament which you want to start with into your printer and start printing the file When the color change is triggered...

Page 43: ...lament change option Choose the Tune and then Change filament option during the print Printer will pause the printing process unload the filament and signals you to insert the new filament The procedure is the same as above You should always use the same material or combine materials with similar print temperatures and settings 10 6 Printing of non standard models Slic3r helps you while printing t...

Page 44: ...inting Another special printing case is when printing objects larger than the heatbed First option is to resize the object to a printable size Right click on an object in Slic3r opens a menu with the Scale option then you choose Uniformly if you want to scale down the model evenly or you can alter the size of a model along the one of the axes Along X Y Z axis Pict 27 Size change of a printed objec...

Page 45: ...r you have to cut the object using Slic3r Right click and choose the Cut option in menu You can cut the object horizontally if you need to perform a cut in a different axis use the Flip option in the same menu Pict 28 Cutting the object with the Cut option 45 ...

Page 46: ...thanks to its minimal thermal expansion Universal material suited also for printable mechanical components Nozzle temperature 240 C Bed temperature 80 100 C Heatbed Make sure the surface is clean as described in 6 3 2 PEI print surface preparation chapter Do not use isopropyl alcohol to clean the bed or the adhesion may be too strong if you do not have anything else on hand use the bundled glue as...

Page 47: ...ture up to 65 C depending the size of an object larger object means higher temperature Heatbed Make sure the surface is clean as described in 6 3 2 PEI print surface preparation chapter Some very soft flex materials can bond to the bed too much and require to use glue on the bed as separator to prevent PEI damage 11 8 Composite materials Composite materials woodfill copperfill bronzefill carbon or...

Page 48: ...ty is improved compared to ABS Typical usage of PC ABS is for durable plastic parts like television or computer casings Nozzle temperature 270 280 C Bed temperature 100 110 C bigger object higher temp Heatbed Make sure the surface of the heatbed is clean 11 12 Dialing in new materials Each manufacturer produces slightly different material even though they are under the same group For example Prusa...

Page 49: ...pray will get the dust away and tweezers can be used for little plastic strands 12 1 3 Extruder drive gear The hobbed drive gear on the extruder motor shaft can have build up of filament shavings in the grooves and cause under extrusion A small brass brush is ideal tool to clean the grooves but regular toothpick will do the job as well Check and clean from the access window on the left of the extr...

Page 50: ... cut the rod cca 10 cm above the damaged part The next step is to clean the extruder There is a service hole on the left side of the extruder where you can access the hobbed pulley pict 29 Clean the hobbed pulley then heat the nozzle before re loading the filament If a problem persists you will have to clean the nozzle Pict 29 Cleaning the extruder you can see the hobbed pulley through the service...

Page 51: ... removing the old nozzle and putting in the new one 1 Move the extruder body upwards to get to the nozzle end LCD menu Settings Move axis Move Z Set the height by rotating the LCD knob and then confirm 2 Unscrew the screw on fan mouthpiece and the two screws on the print fan and remove both parts Pict 30 part 1 3 Remove the two front screws on the nozzle fan Pict 30 part 2 4 Unscrew the two screw ...

Page 52: ...Pict 30 Nozzle change 52 ...

Page 53: ...rger models printed from ABS If you have set the temperature properly the printer is away from drafts and object design is right the printed object should not break The easiest way to avoid breaking or overall model fragility is to choose a different material The strongest are PET HIPS and PLA while PLA has low heat resistance PET is the firmest and has the lowest thermal expansion 12 7 Updating p...

Page 54: ...w these steps Align the Y axis so that each Y corner is sitting on the table none should be off the table Align the tightening of each Y axis threaded rod so that each Y corner is perpendicular facing upright to the table surface Align the tightening of each Y axis threaded rod so that each M8 threaded rod is at a right angle to the M10 threaded rods the Y axis must form a perfect rectangle when v...

Page 55: ...to the assembly manual Pict 32 Proper wiring of the connectors 13 3 Printer can t read SD card First make sure that the file name on the SD does not contain special characters otherwise the file could not be displayed on LCD If there is no error in the file name check the EXT2 wiring from electronics to LCD If the cable is connected properly try to swap the cables 55 ...

Page 56: ... to check is printing a round object if any of the belts are not tightened properly the result is an irregular shape instead of a perfect circle Y axis belt is located under the heatbed X axis belt moves the extruder See the pictures with properly tightened belts Pict 33 A properly tightened Y axis belt under the heatbed Pict 34 A properly tightened X axis belt 56 ...

Page 57: ...tached cables to the heatbed Do not forget to use a spiral wrap on heatbed cables and attach the cables properly so they won t restrict movement during printing Pict 35 Cables to be wrapped in a spiral wrap 57 ...

Page 58: ...Print and share Do not forget to tag your prints with prusai3mk2 while sharing so we can find pin and showcase them with our http www prusa3d com original prusa i3 prints Happy Printing 58 ...

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