Prusa Research Original Prusa i3 MK2 Handbook

Text of Prusa Research Original Prusa i3 MK2 User Guide:

• Prusa Research Original Prusa i3 MK2,  Table of contents  Abouttheauthor 3 2Productdetails 6 3Introduction 6 3.1Glossary 6 3.2Disclaimer 7 3.3Safetyinstructions 7 3.4Licenses 7 4OriginalPrusai3MK2printer 8 5OriginalPrusai3MK2printerkit 9 6Firststeps 10 6.1Printerunpackingandproperhandling 10 6.2Printerassembly 11 6.3Setupbeforeprinting 11 6.3.1Calibrationflow 11 6.3.2PEIprintsurfacepreparation 12 6.3.3Increasingtheadhesion 13 6.3.4Selftest(kitonly) 13 6.3.4.1Self

•  6.3.5.1 Y axis alignment (kit only)  Forautocalibrationtoworkproperly,itisextremelyimportantfortheYaxistobe perpendiculartotheXaxis.Thiscanbeeasilycheckedbylookingattheprinter fromthetopandvisuallyaligningtheXaxisrodswithlinesonthe

•  5 Original Prusa i3 MK2 printer kit   OriginalPrusai3MK2kitispicturedinpict.2.Detailedinformationandassembly descriptioncanbefoundinchapter6.2Printerassembly.Weofferthesupportfor userswhopurchasedtheprinterkitthroughour�

• Prusa Research Original Prusa i3 MK2,  7.3.1.1 Hardened steel nozzle  Hardenedsteelnozzlesareamustforhighlyabrasivematerials.Regularbrassnozzleswill degradeveryquicklyandlosetheirproperties. Mostoftheabrasivematerialsarecomposites,plasticswithsomethingmixedin.Some examplesareColorFabbXTCF20,ColorFabbBronzefill,ColorFabbBrassfillandsomeglow inthedarkfilaments.Alwaysaskyourfilamentvendorifyouarenotsure.Slight disadvantageisthatsomestandardmaterialslikeABSisn&ap

• Prusa Research Original Prusa i3 MK2,   12 FAQ ‐ common issues when assembling the printer kit 12.1 Nozzle/print surface gap is greater in the middle than at the corners Thereasonofthisissueisn’tthebentprintersurfaceorbedbutadistortedYaxis.We suggesttoremovethewholeYaxisoutoftheprinter.Follow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thr

•   9) XYZcalibrationcompromised.Leftfrontcalibrationpointnotreachable. XYZcalibrationcompromised.Rightfrontcalibrationpointnotreachable. XYZcalibrationcompromised.Frontcalibrationpointsnotreachable.  Printerwilllikelywork,butthebedlevelingmaybe

• Prusa Research Original Prusa i3 MK2,  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notsticktoPEIotherwise,likeNylonetc.  Beforeapplyinganythingtothebed,considerusingBrimoption�

• Prusa Research Original Prusa i3 MK2,  11.3 Nozzle cleaning Useawirebrushtocleanthenozzlefromoutside.Heatthenozzlebeforeyoudoso. Iffilamentisnotextrudedfromanozzle(orinverysmallvolume),firstchecktheextruderfan isworkingproperlyandthatthetemperatureissetcorrectly(PLA210°C;ABS255°C,HIPS 220°C,PET240°C).Alsocheckthatthefilamentwascorrectlyloadedintotheextruder. If

• Prusa Research Original Prusa i3 MK2,  11.5 Printing problems  11.5.1 Layers break and split when printing from ABS material  ABSmaterialhasahigherthermalexpansionthanothermaterials.Wesuggestother materialsasPET,HIPSorPLAwhenyouprintlargermodels.  11.5.2 Models contain either too much or not enough of the filament  Youcanmanagethefilamentflowduringtheprint.UsetheLCDknobandchooseTune Flowxx%whereyoucanadjustthefilamentflow.�

• Prusa Research Original Prusa i3 MK2,  6.3.9 First layer calibration (kit only)  NOTE:ThecalibrationprocesshasbeenmadeeasierandisnowcalledV2Calibration.If the  V2Calibration.gcode  isnotpresentonyourSDcardyoucaneasilyobtainitfromour supportoronour  http://www.prusa3d.com/drivers/  page.  Checkifyourprintsurfaceis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c

• Prusa Research Original Prusa i3 MK2,   10 Materials  Temperaturesandtheheatbedtreatmentbeforeprintaccordingtoaspecificmaterial. 10.1 ABS Materialsuitableforcommon,robustobjects. ● Nozzletemperature:255°C ● Bedtemperature:100°C.Youcansetthebedtemperaturebetween80to110°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chap

• Prusa Research Original Prusa i3 MK2,  6 First steps 6.1 Printer unpacking and proper handling  Holdingtheupperframe,taketheprinterandpullitoutfromthebox.Becarefulwhen handlingtheprinternottodamagetheelectronicsandthustheproperprinterfunctionality. Anytimeyoumovetheprinter,alwaysholdtheupperframewithhotbeduprightpointing awayfromyouaspicturedinpict.3A.  Donotforgettoremove

• Prusa Research Original Prusa i3 MK2,  12.5 Detached 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.34  Cables  tobewrappedinaspiralwrap  12.6 Loose heatbed zipties  Makesurethattheziptiesundertheheatbedareproperlytightened.Therearethreezipties intotal,twoontherightside,oneontheleft.    Pict.35  Properly  tightenedziptiesundert

• Prusa Research Original Prusa i3 MK2,  4 Original Prusa i3 MK2 printer  Unliketheprinterkit,it’scompletelyassembledandalmostreadytoprint.Afterpluggingin andrunningthenecessarycalibrationyou,canprinta3Dobjectinthematterofminutes afterunpackingtheprinter.Keepinmindyoucanuseoursupportemailwhenyou purchasedtheassembledprinter.Donothesitatetowriteusifyouneedanyadviceorhelp. Wewillgladlyh

• Prusa Research Original Prusa i3 MK2,  6.3.10.2Checkprobeheight (kit only)  Ifthefirstlayerseemsinconsistentbetweenmultipleprints,theprobemightbe toohigh.LoweritslightlyandtryagainCalibrationXYZ.Keepinmind,theprobe mustbealwayshigherthanthenozzletip,otherwiseitwillcatchonprints.   Pic.11Proberesponsediagram.  6.3.11 Securing of the probe (kit only)  Afte

• Prusa Research Original Prusa i3 MK2,   Insertthefilamentwhichyouwanttostartwithintoyourprinterandstartprintingthefile.  Whenthecolorchangeistriggeredfromthegcodetheprinterwillfollowsimpleprocedure: ● Stopmovingandretract ● RaisetheZby2mmandmovequicklyoutsidetheprintbed ● Unloadthecurrentfilament ● Youwillgetaskedtoinsertthenewfilament.Whenyoudosoandcontinue,filament willbepulledintothehotendandLCDw

• Prusa Research Original Prusa i3 MK2,   Pict.16YoucanfindUSBporthere  ● ChooseconnectionportinPronterface(downloadavailablewiththeprinterdrivers, seethechapter8Printerdrivers):Macusersuse/usbmodem  port,PCWindows portsareCOM1,COM2,etc.;thecorrectportisdisplayedindevicemanager,Linux usersconnecttheprinterusingthevirtualserialport.Whenthe�

• Prusa Research Original Prusa i3 MK2,    Pict.9Theproperlytunedfirstlayer 6.3.9.1Bedlevelcorrection (kit only)  Abedlevelcorrectionisanadvancedfeatureintroducedinthefirmware3.0.6andis designedtoallowadvanceduserstocorrectfortheslightestimperfections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low

•  Afterthat,theprinterasksyoutoconfirmthisstep:"AreleftandrightZcarriagesallup?"  PleasemakesureyoureallymovetheZcarriageuptotheendstoppersuntilyouheara rattlingsoundastheZsteppermotorsskipsteps.Thisprocedureensures,th

• Prusa Research Original Prusa i3 MK2,   Otheroptionsformulticoloredprintistousethefilament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. 9.6 Printing

•   Pleasealwaysrefertothehttp://www.prusa3d.com/drivers/ foranupdatedversionofthis3Dprintinghandbook(PDFdownload).          QUICK GUIDE TO THE FIRST PRINT  1.Readthesafetyinstructionscarefully(page7)  2.Placetheprinteronaflatand

•  7.2.2 Silent vs. Hi‐power mode Theprinterofferstwosettingsformotorpowerconsumption.Silentuseslesscurrentand makestheprinterquieter,butlesspowerful.Hipowerisgreatforverylarge(over200gram) printsandforfreshlyassembledkitsbeforeyoufinetuneeverythin

• Prusa Research Original Prusa i3 MK2,   Pict.17Pronterface  1. Loadfilebuttonisusedtoloadthedesiredmodel..Modelmustbein*.gcodefile format.  2. Choosetheportprinterisconnectedtocomputer.(mostly/usbmodem  forMac, COM1,COM2,etcforWindowsPC). 3. Printbuttonstartstheprintingprocess. 4. Disconnectbuttondisconnectstheprinterfromthecomputer. 5. Printercontrols.Hereyoucanmanipulatethe

• Prusa Research Original Prusa i3 MK2,  7.2.5 Print speed versus print quality Printingasmallobjecttakesafewminutes,butprintinglargermodelsistimeconsuming thereareprintstakingtensofhours.Theoverallprintingtimecanbechangedbydifferent ways.FirstwaytoaltertheprintingspeedischanginglayerheightinSlic3rupperright windowsshowsPrintsettingsoption.Defaultsettingis0.20mm(NORMAL),youcanspeed�

• Prusa Research Original Prusa i3 MK2,    6.3.2 PEI print surface preparation  Toachievethebestadhesiononthenewsurface,itisimportanttokeepthesurfaceclean. Cleaningofthesurfaceisveryeasy.ThebestoptionisIsopropylalcoholavailablein drugstoreswhichisthebestforABS,PLAandothers,exceptforPETGwheretheadhesion maybetoostrong.Secondoptionistouseagentlesprayofawindowcleaner(Windexor similar)onapapertowelandwipethesurface.Thebedca

• Prusa Research Original Prusa i3 MK2,  3.2 Disclaimer  FailuretoreadtheManualmayleadtopersonalinjury,inferiorresultsordamagetothe3D printer.Alwaysensurethatanyonewhooperatesthe3Dprinterknowsandunderstandsthe contentsoftheManual.Wecannotcontroltheconditionsinwhichyouassemblethe OriginalPrusai3.Forthisandotherreasonswedonotassumeresponsibilityandexpressly disclaimliabilityforloss,injuries

• Prusa Research Original Prusa i3 MK2,  ofpaperandthenozzleisclean,youneedtoscrewthePINDAprobeslightlylower andreruntheX/Ycalibration.  2) XYZcalibrationfailed.Pleaseconsultthemanual.  Thecalibrationpointswerefoundinpositionsfarfromwhatshouldbeexpectedfora properlyassembledprinter.Pleasefollowtheinstructionsofcase1).  3) XYZcalibrationok.X/Yaxesareperpendicular

• Prusa Research Original Prusa i3 MK2,  6.3.8 Loading the filament into the extruder  ● Youneedtopreheatthenozzlebeforeinsertingthefilament(andthebedtooifyou liketoprintrightaway).Thetemperaturedependsonthematerialused.Detailed informationaboutnozzleandbedtemperaturesaredescribedatchapter10 Materials.  ● PresstheLCDknobtoenterthemainmenuontheLCD.Rotatethebuttontochoose PreheatoptionandconfirmbypressingtheLCDknob.Next�

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Prusa Research Original Prusa i3 MK2 Manual  26-12-2022 10

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