Prusa Original Prusa i3 MK2 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.
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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.
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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.
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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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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
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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.
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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.
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Pleasecheckthehttp://prusa3d.com/driverspageforupdatedversionofthis3D
printinghanbook(PDFdownload).
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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
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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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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.
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3.3 Safety instructions
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Pleasebeverycautiousduringanyinteractionwiththeprinter.Thisprinterisan
electricaldevicewithmovingpartsandhottemperatureareas.
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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.
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3.4 Licenses
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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/.
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4 Original Prusa i3 MK2 printer
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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.
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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.
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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.
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Pict.1OriginalPrusai3MK2  printer  description
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5 Original Prusa i3 MK2 printer kit
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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.
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Pict.2OriginalPrusai3MK2  printer  kitunboxed
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6 First steps
6.1 Printer unpacking and proper handling
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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.
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Pict.3  Proper  handlingofa  printer
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6.2 Printer assembly
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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
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● 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.
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Filamentisacommontermfortheplasticrodmaterialprovidedonaspoolfrom
which3Dobjectsareprinted.
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6.3.1 PEI print surface preparation
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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.
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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.
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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.
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6.3.2 Increasing the adhesion
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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.
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Beforeapplyinganythingtothebed,considerusingBrimoptioninSlic3rwhichincreases
thesurfaceareaofthefirstlayer.
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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.
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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.
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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.
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Pic.4  ABSJuicecanbeusedto  increasetheadhesion
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6.3.3 Plugging the AC power
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● 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.
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6.3.4 Selftest
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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.
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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.
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Testconsistsof
Heatbedandhotendproperwiring
XYZmotorsproperwiringandfunctionality
XYZendstopmechanicalsettingsandproperwiring.
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Errormessagesandresolution:
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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.
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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.
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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.
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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.
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EndstopnothitMotor{XZY  }:
Checkmechanicalsettingsthatendstopcanbereachedwhenaxisisinmaximal
position.
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6.3.5 Preparing the Z Calibration
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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.
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Theprocessisfairlystraightforward,solet’sgettoit.
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6.3.5.1 Checking the Y‐Axis (kit only)
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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.
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
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  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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