Prusa Original Prusa i3 MK2 User manual

Brand: Prusa

Model: Original Prusa i3 MK2

Category: 3D printers

Type: User manual

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Pleasealwaysrefertothehttp://www.prusa3d.com/drivers/

foranupdatedversionofthis3Dprintinghandbook(PDFdownload).

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QUICK GUIDE TO THE FIRST PRINT

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1.Placetheprinteronaflatandstablesurface(page11)

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2.Readthesafetyinstructionscarefully(page7)

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3.Downloadandinstallthedrivers(page27)

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4.Preparetheprintsurface(page11),runselftest(page13)andcalibratethe

printer(page14)

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5.InsertSDintotheprinterandprintyourfirstmodel(page20,page29)

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Handbookversion1.03fromJune19th,2016.©PrusaResearchs.r.o.

2

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About the author

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JosefPrusa(bornFeb23

rd

,1990)becameinterestedinthe3Dprintingphenomenonbefore

joiningthePrague’sUniversityofEconomicsin2009atfirstitwasahobby,anew

technologyopentochangesandimprovements.Thehobbysoonbecameapassionand

JosefgrewintooneoftheleadingdevelopersofAdrienBowyer’sinternational,opensource,

RepRapproject.Today,youcanseethePrusadesignindifferentversionsallaroundthe

world,itisoneofthemostpopularprintersandthankstoit,knowledgeaboutthe3Dprinting

technologysignificantlyincreasedamongpublic.



Jo’sworkonselfreplicatingprinters(youcanprinttheotherprinterpartswithyourprinter)

arestillongoingandcurrentlythereisPrusa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forallusers.



JosefPrusaalsoorganizesworkshopsforthepublic,participatesinprofessional

conferencesdedicatedtothepopularizationof3Dprinting.Forexample,helecturedatthe

TEDxconferenceinPragueandVienna,atWorldMakerFaireinNewYork,MakerFairein

RomeorattheOpenHardwareSummithostedbyMIT.JosefalsoteachesArduinoat

CharlesUniversityandwasalsoalecturerattheAcademyofArtsinPrague.

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Inhisownwords,heimagines3Dprinterswillbeavailableineveryhomeinanottoodistant

future.Ifanythingisneeded,youcansimplyprintit.Inthisfield,youjustpushthe

boundarieseveryday...We'regladyou'repartofitwithus!

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3

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Table of contents

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Abouttheauthor 3

Tableofcontents 4

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PEIprintsurfacepreparation 11

6.3.2Increasingtheadhesion 12

6.3.3PluggingtheACpower 13

6.3.4Selftest 13

6.3.5PreparingtheZCalibration 14

6.3.5.1CheckingtheYAxis(kitonly) 14

6.3.5.2Probealignment(kitonly) 14

6.3.5.3CheckingtheZaxis 16

6.3.6Loadingthefilamentintotheextruder 17

6.3.7ZCalibration 18

6.3.7.1FinetuningtheZadjustment 19

6.3.7.2Securingoftheprobe(kitonly) 19

7Printing 20

7.1PrinterControl 21

7.1.1LCDscreen 21

7.1.2Printstatistics 21

7.1.2Silentvs.Hipowermode 22

7.1.3Factoryreset 22

7.1.4LCDlayout 22

7.1.5Printspeedversusprintquality 24

7.1.6USBcableandPronterface 24

7.2Printeraddons 26

7.2.1Differentnozzles 26

7.2.1.1Hardenedsteelnozzle 27

7.2.1.20.25mmnozzle 27

8Printerdrivers 27

9Printingyourownmodels 27

9.1Whereyoucangetthe3Dmodels? 27

9.2Inwhatprogramyoucancreateyourownmodels? 28

4

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9.3Slic3r 28

9.4Bundled3Dmodels 29

9.5PrintincolorwithColorPrint 30

9.6Printingofnonstandardmodels 32

9.6.1Printingwithsupportmaterial 32

9.6.2Largeobjectprinting 33

10Materials 34

10.1ABS 34

10.2PLA 34

10.3PET 34

10.4HIPS 34

10.5PP 34

10.6Nylon(TaulmanBridge) 34

10.7Flex 35

11FAQPrintermaintenanceandprintissues 36

11.1Printsurfacepreparation 36

11.2Clogged/jammedextruder 36

11.3Nozzlecleaning 37

11.4Replacing/changingthenozzle 37

11.5Axisfluency 38

11.5Printingproblems 39

11.5.1LayersbreakandsplitwhenprintingfromABSmaterial 39

11.5.2Modelscontaineithertoomuchornotenoughofthefilament 39

11.6Problemswithfinishedmodels 39

11.6.1Modelbreaksand/oriseasilydamaged 39

12FAQcommonissueswhenassemblingtheprinterkit 40

12.1Nozzle/printsurfacegapisgreaterinthemiddlethanatthecorners 40

12.2Printerstopsprintingsoonafterstart 41

12.3Printercan’treadSDcard 41

12.4LooseXand/orYaxisbelts 42

12.5Detachedcablestotheheatbed 43

12.6Looseheatbedzipties 43

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Importantnotice,tip,hintorinformationthathelpsyouprintwithease.

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Readcarefully!Thispartoftexthasuppermostimportanceeitherforusersafetyof

foraproperprinterservice.

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Thissymbolindicatestextrelatedtoprinterkitonly.

5

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2 Product details

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Title:OriginalPrusai3MK2/OriginalPrusai3MK2(kit),Filament:1.75mm

Manufacturer:PrusaResearchs.r.o.,621/8aPrvnihopluku,Prague,18600,CzechRepublic

Contacts:phone+420222263718,email:[email protected]

EEEgroup:3(ITand/ortelecommunicationequipment),Deviceuse:indooronly

Powersupply:90135VAC,2A/180264VAC,1A(5060Hz)

Workingtemperaturerange:18°C(PLA)38°C,indooruseonly

Workinghumidity:85%orless

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Kitweight(brutto/netto):9.8kg/6.3kg,assembledprinterweight(brutto/netto):12kg/

6.3kg.Serialnumberislocatedontheprintercontrolunitandalsoonthepackaging.

3 Introduction

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Thankyouforpurchasingouroriginal3DprinterOriginalPrusai3MK2fromJosefPrusa

eitherasanassembledprinteroraprinterkitasyourpurchasesupportsuswithitsfurther

development.Readthehandbookcarefully,please,allchapterscontainvaluableinfoforthe

correctserviceoftheprinter.



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[email protected]



.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youcanfindsolutionstocommonissues,tips,

adviceandhintsinadditiontoactualinformationabouttheOriginalPrusai3printer’s

development.

3.1 Glossary



Bed,Heatbed,PrintbedCommonlyusedtermforprintingpadaheatedareaof3D

printerwhere3Dobjectsareprinted.

ExtruderPrintingheadorextruderisapartofaprinterconsistingofanozzle,hobbed

pulley,idlerandanozzlefan.

FilamentTermforplasticprovidedonspooliscalled“filament”,it’susedthroughoutthis

handbookaswellasintheLCDmenuontheprinter.

Heater,Hotendothernameforaprintingnozzle.

1.753Dprintersusetwodifferentdiameters(thickness)ofafilament(thickness):2.85mm

(commonlycalledas3mm)and1.75mm.1.75mmversionismoreusedworldwidethough

thereisnodifferenceinprintingquality.

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6

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3.2 Disclaimer

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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,damage,orexpensearisingoutoforinanywayconnected

withtheassembly,handling,storage,useordisposaloftheproduct.Theinformationinthis

Manualisprovidedwithoutanywarranty,expressorimplied,regardingitscorrectness.



3.3 Safety instructions



Pleasebeverycautiousduringanyinteractionwiththeprinter.Thisprinterisan

electricaldevicewithmovingpartsandhottemperatureareas.



1.Deviceisforindooruseonly.Donotexposetheprintertorainorsnow.Alwayskeepthe

printerinadryenvironmentataminimumdistanceof30cmfromotherobjects.

2.Alwaysplacetheprinteronastableplace,whereitcannotfallortipover.

3.Theprintersupplyishouseholdpoweroutlet230VAC,50Hzor110VAC/60Hz;Never

connecttheprintertoadifferentpowersupply,itmaycausemalfunctionordamagetothe

printer.

4.Placethepowercordsoyoucan’tstumbleonit,orsteponitorotherwiseexposetoany

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mustbeprovidedbyaqualifiedtechnician.

7.Donottouchthenozzleorheatbedwhentheprinterisprintingoriswarmingup.Note

thatthetemperatureofthenozzleis210300°C(410572°F);heatbedtemperaturecan

reachover100°C(212°F).Temperaturesabove40°C(104°F)cancauseharmtohuman

body.

8.Donotreachinsidetheprinterwhileitisstillinoperation.Aninjurymaybecausedbyits

movingparts.

9.Preventchildrenfromunsupervisedaccesstotheprinterevenwhentheprinterisnot

printing.

10.Donotleavetheprinterunattendedwhileit'sstillon!

11.Plasticisbeingmeltedduringprintingwhichproducesodors.Setuptheprintersome

placewellventilated.



3.4 Licenses



OriginalPrusai3MK2printerisapartoftheRepRapproject,thefirstopensource3Dprinter

projectfreetouseunderaGNUGPLv3license(www.gnu.org/licenses/gpl3.0.en.html).If

youimproveoralteranypartofaprinterandyouarewillingtosell,thenyouhavetopublish

thesourcecodesunderthesamelicense.All3Dprintedelementsoftheprinterthatcanbe

improveduponcanbefoundathttp://www.prusa3d.com/prusai3printableparts/.

7



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helpwithanyspecificprints.



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supportsonlya1.75mmfilament.Pleasecheckthefilamentdiametertobe

1.75mmbeforeinsertingintotheextruder.Donottrytoinsertwiderfilamentitcoulddamage

theextruder.



Pict.1OriginalPrusai3MK2



printer



description

 

8



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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MK2



printer



kitunboxed

9



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.3.



Pict.3



Proper



handlingofa



printer

10



6.2 Printer assembly



WithOriginalPrusai3MK2printerkitwesuggesttofollowtheguidelinesand

assemblethekitaccordingtothetheonlinemanualatmanual.prusa3d.com.(Online

manualisavailableinseverallanguagesonthewebsite).Theconstructionofthe

printershouldnottakemorethanoneworkingday.Afterasuccessfulcompletion

continuetothechapter6.3Setupbeforeprinting.

6.3 Setup before printing



● Placetheprinter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.



Filamentisacommontermfortheplasticrodmaterialprovidedonaspoolfrom

which3Dobjectsareprinted.



6.3.1 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,expect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canbecleanedevenwhilehot,just

becarefulnottotouchthesurfaceorthenozzle.Alternatively,youcancleanthebedwith

warmwaterandafewdropsofadishsoaponapapertowel.Denaturedalcoholisyet

anotheroption.



Thesurfacedoesnothavetobecleanedbeforeeveryprint!Itisjustimportanttonot

touchtheprintbedwithyourhandsordirtytools.Cleanyourtoolswiththesame

solutionasyouwouldthebedandyouwillbeabletostartyournextprintrightaway.



Youcanleavesmallmarksontheprintsurfacewithyournozzleortools,theywilltypically

beshinierthantherest.Itdoesnotaffectthefunctionalityoradhesion.However,ifyouwant

tohavesamesurfacelookonthewholeprintbedyoucanresurfaceit.Theeasiestwayisto

takeahardsideofdrykitchenspongeandwipetheaffectedareawithcircularmotiongently

fewtimes.



 

11



6.3.2 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inSlic3rwhichincreases

thesurfaceareaofthefirstlayer.



ForPLAandNylonblendsasimplegluestickdoesthetrick.Gluecanbelatereasily

removedbywindowcleanerordishsoapwater.



ForABSprints,ABSjuicecanbeusedandlatercleanedwithpureacetone.Beverygentle

whenapplyingthejuiceanddosowhilethebediscold.Printswillattachverystrongly.



Preparedjuicecanbealsopurchasedinoureshop.Unfortunately,UPSservice

doesnotallowtodeliveranyacetonebasedproductsduetoshippingconstraints.In

thatcaseyougetonlythebottleandABSfromoureshopandyouhavetosource

theacetonelocally.



Pic.4



ABSJuicecanbeusedto



increasetheadhesion

 

12



6.3.3 Plugging the AC power



● 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.



6.3.4 Selftest



Thepurposeoftheselftestroutineistocheckmostcommonerrorswhenassemblingand

connectingelectronicsandtohelpindicateanypossibleerrorsafterassembly.Youcanrun

theSelftestfromSettingsmenuonLCDpanel.Thisshouldnotbenecessaryonthe

assembledprintersasthosearepretested.



Initiatingthisroutineperformsaseriesoftests.Theprogressandresultsofeachstepare

displayedontheLCD.Incaseoferrorsfound,theselftestisinterruptedandthereasonfor

errorisshowntoguideusersintroubleshooting.



Testconsistsof

Heatbedandhotendproperwiring

XYZmotorsproperwiringandfunctionality

XYZendstopmechanicalsettingsandproperwiring.



Errormessagesandresolution:



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swappedintheRamboelectronics.



EndstopsWiringerror{XYZ



}:

Checkthepropercablingofendstops.Routineindicatesaxisonwhichendstop

reportedmalfunctionorisnotproperlyresponding.Checktheproperconnectionin

theRamboelectronics.



Motor{XYZ



}Endstop{XYZ



}:

Checkthatmotorandendstoponindicatedaxisareproperlyconnectedtothe

Ramboelectronicsandnotswappedwithmotororendstopofdifferentaxis.Axis

causingtheproblemsisindicatedontheLCDpanel.



EndstopnothitMotor{XZY



}:

Checkmechanicalsettingsthatendstopcanbereachedwhenaxisisinmaximal

position.

13



6.3.5 Preparing the Z Calibration



TheOriginalPrusai3MK2comeswithafullmeshbedlevelingfeature,howeverforthisto

workweneedtofirstcalibratethedistancebetweentipofthenozzleandP.I.N.D.A(Prusa

INDuctionAutoleveling)probe.



Theprocessisfairlystraightforward,solet’sgettoit.



6.3.5.1 Checking the Y‐Axis (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heatbed.You

canseeitonthenextpicture.IftheYaxisismisaligned,youcaneasilyadjustthe

positionoftheYaxisinsidetheframebylooseningtheM10nutsontheYaxisandsecuring

thematthenewlyadjustedposition.



Pic.5Xaxisrodsmustbevisuallyalignedwithlinesontheheatbed.



6.3.5.2 Probe alignment (kit only)



Thefirststepistomechanicallysetthepositionoftheprobe.Thetopoftheprobe

shouldbealignedwiththebottomofaprintedpartasyoucanseeinthepicture

number6.Thepositioncanbeeasilychangedevenonanassembledprinterby

looseningthebottomnutfewturns,movingthewholeprobeandadjustingthetop

nutaccordingly.



Securethebottomnutafterwardsoritcangetlooseduringprintinglater!

Alsotheprobeshouldbeperpendiculartotheprintbed.



14



Pic.6Thetopoftheprobeshouldbealignedwiththebottomofaprintedpart



WhenyouruntheCalibrateZfeaturefromtheSettingsmenuontheLCDpanel,theprinter

willrunthecalibrationroutine.Closelywatchhowtheprobeapproachesthe9calibration

points.1standthelastpointsaremarkedwithwhitedashedcirclesforeasyrecognition.The

probemustbeinsidethosecirclestosuccessfullycalibrate.



Thenozzlemustnottouchtheprintsurfaceduringthiscold

calibration.IfitbendstheprintsurfaceORtheprobeisnot

insidethecircles,itiswrongandyouhavetoreadjustthe

P.I.N.D.Aprobe!Onlythenyoushouldcontinuewiththecalibration

process.Ifyou’rehavingtrouble,feelfreetoaskusforhelp.Ifthe

problemisnottakencareofduringthecoldcalibration,thenozzle

willpermanentlydamagetheprintsurfacewhenhot.



Pic.7Theprobemustbeinsidethecirclestosuccessfullycalibrate



.



Iftheprobeismisaligned,youcaneasilyadjustthepositionoftheYaxisinsidetheframeby

looseningtheM10nutsontheYaxisandsecuringthematthenewlyadjustedposition.

15



6.3.5.3 Checking the Z‐axis



ItisextremelyimportantforbothXENDpartstobeatthesameheight.Thiscanbe

achievedbyraisingtheZaxisuntilithitsthetopfromtheLCDmenu.GotoSettings>

Moveaxis>MoveZandrotatetheknobuntiltheaxisreachesthetop.Don’tworry,the

motorsdonothaveenoughpowertodamageanything,butitwillmaketheZaxisniceand

straight.



Pic.8ItisextremelyimportantforbothXENDpartstobeatthesameheight



Ifthereisanymisalignment,itwillcausetheprintertotouchtheprintsurfacewiththenozzle

typicallyonthe3calibrationpointsontherightside.



16



6.3.6 Loading the filament into the extruder



● 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youchoosethematerial

youwillprintfrom.ChooseamaterialthenconfirmwithLCDknob.Thenozzleand

heatbedwillheattotherequestedtemperature.



● 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ontheLCDpaneltoenterthemainmenu.Insertthefilamentto

theextruder,choosetheLoadfilamentoptioninthemenuandpressthebutton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.9detail).



Pict.9



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.

17



6.3.7 Z Calibration



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6.3.1PEIprintsurfacepreparation.Don'tforgettocomplete6.3.5

PreparingtheZCalibration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card.



Theprinterwillprobethebedandstartprintingzigzagpatternontheprintsurface.The

nozzlewillbeattheheightbasedontheP.I.N.D.Aprobesetting,itmustnotbyanymeans

touchtheprintsurface.



Pict.10Howtotunethenozzleheightliveduringthetestprint



Observethelinewhichisbeingextrudedontheprintsurface.GototheLCDmenuand

choosetheLiveadjustZoption.Anewmenuwillshowupwhereyoucantunethenozzle

heightliveduringthetestprint.Thepointistolowerthenozzleuntiltheextrudedplastic

sticksnicelytothebedandyoucanseeitisbeingslightlysquished.

18



6.3.7.1 Finetuning the Z adjustment



Afterfinishingthecalibrationgcode,itisagoodideatoprintasimpleobject.ThePrusa

gcodefromthesuppliedSDcardisagreatexample.TheLiveadjustZfunctionworks

duringeveryprint,soyoucanfinetuneatanypoint.Youcanseetheproperlytunedfirst

layerontheimagesbelow.



Pict.11Theproperlytunedfirstlayer



Nowyouaredone!



6.3.7.2 Securing of the probe (kit only)



Aftercoupleofprintsideallysecurethebottomnutontheprobewithadropof

Loctite243(BlueThreadlocker)topreventlooseningovertime.



Pict.12securethebottomnutontheprobewithadropofLoctite243



19



7 Printing



● Makesurethatthenozzleandthebedareheatedtothedesiredtemperature.Ifyou

forgettopreheattheprintingnozzleandthebedbeforeprinting,theprinterwill

automaticallycheckthetemperaturesofthenozzleandthebed;printingwillstart

whendesiredtemperatureisreacheditcantakeseveralminutes.However,we

recommendpreheatingtheprinterbeforehandasdescribedinthechapter6.3.6

Loadingthefilamentintotheextruder.

Donotletthepreheatedprinteridle.Whenaprinterispreheatedandnonprinting

materialinanextruderdegradesovertimeitmaycausethenozzletojamup.

● Watchthefirstfewprintedlayerstobesurefilamenthasattachedtothebed

properly(5to10minutes).

● PresstheLCDknobandchoosethePrintfromSDoptionfrommenu,pressto

confirmandpickthedesired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.

● Whenprintingisfinishedletthenozzleandheatbedcooldownbeforeremovingthe

printedobject.Alwayshandletheprintedobjectswhentemperatureofthebedand

nozzledroptotheroomtemperature,whenthebedishotobjectsareveryhardto

remove.Pullthebedtowardsyouandremovetheobjectgently.

● Ifyouexperienceanytroublesremovingtheobject(especiallythesmallones)you

canuseaflattoollikeaspatulaorStanleyblade.



Pict.13



Removing



the



model



fromPEIprintsurfacewithspatula

20

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Prusa Original Prusa i3 MK2 User manual

Brand: Prusa

Model: Original Prusa i3 MK2

Category: 3D printers

Type: User manual

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Prusa Original Prusa i3 MK2 User manual

Prusa Original Prusa i3 MK2 User manual

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