2. Computers & electronics
  3. Print & Scan
  4. 3D printers
  5. Prusa
  6. Original Prusa i3 MK2

Prusa Original Prusa i3 MK2 User manual

  • Hello! I have reviewed the user manual for the Original Prusa i3 MK2 Kit and Original Prusa i3 MK2 3D printers, which includes detailed instructions on assembly, calibration, printing processes, and maintenance. The document also explains key features like the PEI print surface, full mesh bed leveling, and the ColorPrint option. I'm ready to answer any questions you have about your device or the information in the manual.
  • How should I clean the print surface?
    What should I do if the nozzle touches the print surface during calibration?
    How can I increase adhesion?
    What is the purpose of selftest routine?
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.Placetheprinteronaflatandstablesurface(page11)
2.Readthesafetyinstructionscarefully(page7)
3.Downloadandinstallthedrivers(page27)
4.Preparetheprintsurface(page11),runselftest(page13)andcalibratethe
printer(page14)
5.InsertSDintotheprinterandprintyourfirstmodel(page20,page29)
Handbookversion1.03fromJune19th,2016.©PrusaResearchs.r.o.
2
About the author
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.
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!
3
Table of contents
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
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
Importantnotice,tip,hintorinformationthathelpsyouprintwithease.
Readcarefully!Thispartoftexthasuppermostimportanceeitherforusersafetyof
foraproperprinterservice.
Thissymbolindicatestextrelatedtoprinterkitonly.
5
2 Product details
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
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
Thankyouforpurchasingouroriginal3DprinterOriginal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printingnozzle.
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.
6
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,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GNUGPL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pict.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properprinterfunctionality.
Anytimeyoumovetheprinter,alwaysholdtheupperframewithhotbeduprightpointing
awayfromyouaspicturedinpict.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(Prusa
INDuctionAutoleveling)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
Preheatoption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Loadfilamentoption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
(pict.9detail).
Pict.9
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.
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printingnozzle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modelmodel_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
/