Prusa Research Original Prusa i3 MK2 kit User manual

Brand
Prusa Research
Model
Original Prusa i3 MK2 kit
Type
User manual
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stablesurface(page11)
3.Downloadandinstallthedrivers(page31)
4.Calibratetheprinterbyfollowingourcalibrationflow(page11)
5.InsertSDintotheprinterandprintyourfirstmodel(page24)
Handbookversion1.04fromAugust8,2016.©PrusaResearchs.r.o.
About the author
JosefPrusa(bornFeb23rd,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!
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Selftesterrormessagesandresolution(kitonly) 14
6.3.5CalibrateXYZ(kitonly) 14
6.3.5.1CalibrateXYZerrormessagesandresolution(kitonly) 15
6.3.5.1Yaxisalignment(kitonly) 18
6.3.6CalibrateZ 18
6.3.7Meshbedlevelling 19
6.3.8Loadingthefilamentintotheextruder 20
6.3.8.1Unloadingthefilament 21
6.3.9Firstlayercalibration(kitonly) 21
6.3.9.1Bedlevelcorrection(kitonly) 22
6.3.10Finetuningthefirstlayer 22
6.3.10.1Printprusalogo 22
6.3.10.2Checkprobeheight(kitonly) 23
6.3.11Securingoftheprobe(kitonly) 23
7Printing 24
7.1Removingobjectsfromtheprinter. 24
7.2PrinterControl 25
7.2.1LCDscreen 25
7.2.2Printstatistics 25
7.2.2Silentvs.Hipowermode 26
7.2.3Factoryreset 26
7.2.4LCDlayout 26
7.2.5Printspeedversusprintquality 28
7.2.6USBcableandPronterface 28
7.3Printeraddons 30
7.3.1Differentnozzles 31
7.3.1.1Hardenedsteelnozzle 31
7.3.1.20.25mmnozzle 31
8Printerdrivers 31
9Printingyourownmodels 31
9.1Whereyoucangetthe3Dmodels? 31
9.2Inwhatprogramyoucancreateyourownmodels? 32
9.3Slic3r 32
9.4Bundled3Dmodels 33
9.5PrintincolorwithColorPrint 34
9.6Printingofnonstandardmodels 36
9.6.1Printingwithsupportmaterial 36
9.6.2Largeobjectprinting 37
10Materials 38
10.1ABS 38
10.2PLA 38
10.3PET 38
10.4HIPS 38
10.5PP 38
10.6Nylon(TaulmanBridge) 38
10.7Flex 39
10.8Dialinginnewmaterials 39
11FAQPrintermaintenanceandprintissues 40
11.1Printsurfacepreparation 40
11.2Clogged/jammedextruder 40
11.3Nozzlecleaning 41
11.4Replacing/changingthenozzle 41
11.5Axisfluency 42
11.5Printingproblems 43
11.5.1LayersbreakandsplitwhenprintingfromABSmaterial 43
11.5.2Modelscontaineithertoomuchornotenoughofthefilament 43
11.6Problemswithfinishedmodels 43
11.6.1Modelbreaksand/oriseasilydamaged 43
12FAQcommonissueswhenassemblingtheprinterkit 44
12.1Nozzle/printsurfacegapisgreaterinthemiddlethanatthecorners 44
12.2Printerstopsprintingsoonafterstart 45
12.3Printercan’treadSDcard 45
12.4LooseXand/orYaxisbelts 46
12.5Detachedcablestotheheatbed 47
12.6Looseheatbedzipties 47
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.
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info@prusa3d.com
.We
aregladtoreceiveallyourvaluablecommentsandtips.Westronglysuggestyoutovisitour
officialforumatforum.prusa3d.com,where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.
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/.
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
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
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properprinterfunctionality.
Anytimeyoumovetheprinter,alwaysholdtheupperframewithhotbeduprightpointing
awayfromyouaspicturedinpict.3A.
Donotforgettoremoveallshippinghelpersparts
showninpic3Borthewhiteziptiesused.
Pict.3A
Proper
handlingofa
printer
Pict.3B
Donotforgettoremoveallshippinghelpersparts 
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.
● PlugintheACpowercord,checktomakesurethepropersettingforACvoltageis
selected(110V/220V)andturnontheswitch.
● Checkoutthefirmwareversion(intheSupportmenuviaLCDpanel)andifit’solder
than3.0.6,pleaseupgradetothelatestonefromourwebsite
http://www.prusa3d.com/drivers/otherwiseyouwon’tbeabletofollowournew
calibrationflow.Version3.0.6ispreinstalledonprintersshippedfromAugust9,
2016.
Filamentisacommontermfortheplasticrodmaterialprovidedonaspoolfrom
which3Dobjectsareprinted.
6.3.1 Calibration flow
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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.
TheindustrialgluewhichholdsthePEIsheetontheheatbeditselfsoftenswhen
temperaturesgreaterthan110°Careused.Ifhighertemperaturesareused,the
gluecanmigrateunderthePEIandcreateslightbumpsonthesurface.
6.3.3 Increasing the adhesion
Insomespecialoccasions,likeatallobjectwithaverysmallcontactareawiththeprint
surface,youmightneedtoincreasetheadhesion.FortunatelyPEIisaverychemically
resistantpolymerandyoucantemporaryapplyotheradhesionsolutionswithoutdamaging
it.
Thisalsoappliestomaterialswhichwould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.
6.3.4 Selftest (kit only)
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Calibration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.
6.3.4.1 Selftest error messages and resolution (kit only)
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minimal
position.
6.3.5 Calibrate XYZ (kit only)
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.Wealsosuggesttocheck
outourGuideforNewUserfirstatwww.prusa3d.com/buildvideomk2withcalibrationtips.
ThepurposeoftheX/Y/ZcalibrationroutineistomeasuretheskewoftheX/Y/Zaxesandto
findthepositionofthe9calibrationpointsontheprintbedfortheproperbedleveling.You
canruntheXYZcalibrationfromCalibrationmenuonLCDpanel.Thisshouldnotbe
necessaryontheassembledprintersasthosearefactorycalibrated.Besureyou’reusing
thefirmwareversion3.0.6orthelatestone!
Initiatingthisroutineperformsaseriesofmeasurementsinthreerounds:Inthefirstround,4
sensorpointsontheprintbedaresearchedforcarefullyastonottouchtheprintbedbythe
nozzle.Inthesecondround,all9sensorpointsarefound.Inthelastroundtheheightabove
the9sensorpointsismeasuredandstoredintoanonvolatilememoryforreference,this
finishedtheZaxiscalibration.
TheprogressandresultsofeachsteparedisplayedontheLCD.Incaseoferrorsfound,the
XYZcalibrationisinterruptedandthereasonforerrorisshowntoguideintroubleshooting.
AtthestartoftheXYZcalibrationproceduretheprinterpromptsyoubyafollowingmessage:
"CalibratingX/Y.MoveZcarriageuptotheendstoppers.Clickwhendone.”
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,that1)theXaxis
isperfectlyhorizontal,2)theprintnozzleisinaknowndistancefromtheprintbed.Incase
theZcarriagedidnottouchtheendstoppers,theprintercouldnotpossiblyknowtheheight
oftheprintnozzleabovetheprintbedanditcouldthereforecrashintotheprintbedduring
thefirstroundoftheX/Ycalibrationprocedure.
TheXYZcalibrationprocedurealsopromptsyouto"Pleasecleanthenozzlefor
calibration.Clickwhendone."
Ifthisadviceisnotfollowedandthereisaplasticdebrisontheprintnozzle,thenthedebris
maytouchtheprintbedorevenpushtheprintbedawayfromthePINDAprobe,sothe
PINDAprobewillnottriggerproperlyandthecalibrationwillfail.
Placeasheetofaregularofficepaper(forexamplethechecklist
shippedwitheveryorder)andholditunderthenozzleduringthefirst
round(first4pointsbeingchecked)ofcalibration.Ifthenozzlecatches
onthepaperduringtheprocess,powerofftheprinterandlowerthe
P.I.N.D.A.probeslightly.SeetheP.I.N.D.A.proberesponsediagramin
6.3.10.2Checkprobeheight.Thepaperwillnotaffectthecalibration
process.Thenozzlemustnottouchtheprintsurfaceordeflectthebed
byanymeans.Ifeverythingwentcorrectly,tightenthebottomnutofthe
probeoritcangetlooseduringprintinglater!
6.3.5.1 Calibrate XYZ errormessagesandresolution(kit only)
1) XYZcalibrationfailed.Bedcalibrationpointwasnotfound.
Calibrationroutinedidnotfindabedsensorpoint.Theprinterstopsclosetothebed
point,whichitfailedtodetect.Pleaseverify,thattheprinterisassembledcorrectly,
thatallaxesmovefreely,thepulleysdonotslipandtheprintnozzleisclean.If
everythinglooksgood,reruntheX/Ycalibrationandverifywithasheetofpaper
betweenthenozzleandtheprintbedthattheprintnozzledoesnottouchtheprint
bedduringthecalibrationroutine.Ifyoufeelafrictionofthenozzleagainstthesheet
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.
Congratulations,youbuiltyourprinterprecisely,yourX/Yaxesareperpendicular.
4) XYZcalibrationallright.X/Yaxesareslightlyskewed.
Goodjob,theX/Yaxesarenotpreciselyperpendicular,butstillquiteallright.The
firmwarewillcorrectfortheX/Yskewduringnormalprinting,soboxeswillbeprinted
withrightangles.
5) X/Yskewedseverely.Skewwillbecorrectedautomatically.
YoumayconsidertorealigntheX/Yaxes(asdescribedinthechapter6.3.5.1 Y
axis alignment).Stillthefirmwarewillcorrecttheskewduringnormalprintingandas
longastheXandYaxesmovefreely,theprinterwillprintcorrectly.
6) XYZcalibrationfailed.Leftfrontcalibrationpointnotreachable.
EveniftheprintermovestheprintbedtotheendYendstop,thePINDAprobe
cannotreachtheleftfrontbedcalibrationpoint.MovetheleftYthreadedrodintheZ
frameawayfromyou,sothePINDAprobereachestheleftfrontbedcalibrationpoint
reliably.You can find how to fix this in the next chapter 6.3.5.1 Y axis
alignment.
7) XYZcalibrationfailed.Rightfrontcalibrationpointnotreachable.
EveniftheprintermovestheprintbedtotheendYendstop,thePINDAprobe
cannotreachtherightfrontbedcalibrationpoint.MovetherightYthreadedrodinthe
Zframeawayfromyou,sothePINDAprobereachestherightfrontbedcalibration
pointreliably.You can find out how to fix this in the next chapter 6.3.5.1 Y axis
alignment.
8) XYZcalibrationfailed.Frontcalibrationpointsnotreachable.
EveniftheprintermovesthetabletotheendYendstop,thePINDAprobecannot
reachthefrontrowofthebedcalibrationpoints.Movebothleft/rightYthreaded
rodsintheZframeawayfromyou.You can find out how to fix this in the next
chapter 6.3.5.1 Y axis alignment.
9) XYZcalibration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compromisedandtheskewofthe
X/Yaxesmaynotbefullycorrected.Itisrecommendedtoadjustthepositionsofthe
YthreadedrodsintheZframeasincases6)to8).You can find out how to fix this
in the next chapter 6.3.5.1 Y axis alignment.
Duringthemeshbedlevelingprocedurefollowingerrorsmaybereportedonthedisplay.
1) Bedlevelingfailed.Sensordisconnectedorcablebroken.Waitingforreset.
Verify,whetherthePINDAprobecableispluggedintotheRAMBoboardcorrectly.If
itisthecase,thePINDAprobeisbrokenanditneedstobereplaced.
2) Bedlevelingfailed.Sensordidn’ttrigger.Debrisonnozzle?Waitingforreset.
ThisisasafetychecktoavoidthenozzletocrashintotheprintbedifthePINDA
sensorstopsworkingorsomethinggoeswrongwiththeprintermechanics(for
example,apulleyslips).Thissafetycheckmaybetriggeredaswell,iftheprinterhas
beenmovedtoanunevensurface.Beforedoinganythingelse,maketheZaxislevel
bygoingallthewayupandtryagain.
AttheendoftheX/Ycalibration,theprintermeasuresthereferenceheightabove
eachofthe9bedsensorpointsandstoresthereferenceheightsintoanonvolatile
memory.Duringthenormalbedleveling,itisexpectedthatthePINDAprobetriggers
notfurtherthan1mmfromthereferencevalue,thereforethenozzleisnotallowedto
movemorethan1mmbelowthereferencevalueduringthebedcalibration.
Ifyoumovedtheprinter,youmayneedtoreruntheZcalibrationtosamplenew
referenceZheightvaluesreflectingthetwistandbendofthetablesurfacetheprinter
issittingon.Ifthatdoesnothelp,pleaseverify,thatthePINDAprobeisalignedwith
thesensorpointsontheprintbedduringthebedZcalibration.Thealignmentshall
beensuredbytheautomaticX/Ycalibrationroutine.IfthePINDAprobeisnomore
alignedduringtheZcalibrationovertime,itispossible,thatapulleyisslippingor
somethingonthemachineframegotloose.
3) Bedlevelingfailed.Sensortriggeredtoohigh.Waitingforreset.
Similartocase2).ThistimethePINDAsensortriggeredmorethan1mmabovethe
referenceheight.Beforedoinganythingelse,maketheZaxislevelbygoingallthe
wayupandtryagain.
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heatbed.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.
YoucanseehowintheAssemblyManual7.PSU/Step18orinP.I.N.D.A.Probe
Misalignedtopicathelp.prusa3d.com.
Pic.5Xaxisrodsmustbevisuallyalignedwithlinesontheheatbed.
IftheCalibrateXYZgives“XYZcalibrationcompromised.Frontcalibrationpointsnot
reachable.
”error,youdon’tnecessarilyneedtoadjusttheM10nutsandpositionoftheaxis
intheframe,butyoucanadjustthebeltholderposition.NewversionoftheYbeltholder
withaslot(shippedfromAugust8,2016)allowstomakea1mmadjustmenttoboththe
frontandtheback.LoosentheYbeltholderscrews,pushthebeltholderparttowardstheY
motorandretightenthescrews.
6.3.6 Calibrate Z
CalibrateZislocatedinCalibrationmenu.Itshouldbeperformedafteryoumovethe
printertodifferentlocation.Itsavestheheightsofall9calibrationpointsinnonvolatile
memory.Storedinformationisusedeverytimemeshbedlevellingiscalledduringaprint.
Whenthemeasuredvaluesarevastlydifferenttothestoredvalue,printiscanceledasitisa
goodindicatorsomethingiswrong.CalibrateZisapartofCalibrateXYZroutinesothere’s
noneedtorunitaftersuccessfulCalibrateXYZ.
Itisagoodpracticetorunthisprocedureeverytimeyoutravelorprinterisshippedasthe
geometrymightchangeslightlyandcauseanerror.
AtthestartoftheZcalibrationproceduretheprinterpromptsyoubyafollowingmessage:
"CalibratingZ.MoveZcarriageuptotheendstoppers.Clickwhendone.”
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,that1)theXaxis
isperfectlyhorizontal,2)theprintnozzleisinaknowndistancefromtheprintbed.Incase
theZcarriagedidnottouchtheendstoppers,theprintercouldnotpossiblyknowtheheight
oftheprintnozzleabovetheprintbedanditcouldthereforecrashintotheprintbedduring
theZcalibrationprocedure.
TheZcalibrationprocedurealsopromptsyouto"Pleasecleanthenozzleforcalibration.
Clickwhendone."
Ifthisadviceisnotfollowedandthereisaplasticdebrisontheprintnozzle,thenthedebris
maytouchtheprintbedorevenpushtheprintbedawayfromthePINDAprobe,sothe
PINDAprobewillnottriggerproperlyandthecalibrationwillfail.
6.3.7 Mesh bed levelling
MeshbedlevellingcanbefoundinCalibrationmenu.Itisthesameprocedurewhichis
performedbeforeeveryprint.YoucanuseittochecktheP.I.N.D.A.probealignmentwith
thecalibrationpointshoweveritisnotnecessaryduringthecalibrationprocessasMeshbed
levelingisapartofCalibrateXYZandCalibrateZroutines.
Beforerunningthiscommandcleanthenozzletipfromanydebrisandrunitwhilethe
nozzleiscold.Iftheprobeismisalignedandthenozzleispreheated,thenozzlecan
makepermanentimpressionsintheprintsurface.
Pic.6Theprobemustbeinsidethecircles(1stand9thcalibrationpoint)tosuccessfully
levelthebed
.
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
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.
●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.7detail).
Pict.7
Loading
the
filament
totheextruder
● Checkifthefilamentisflowingfromthenozzle.
● Ifyouchangethefilamentforanewonedonotforgettocompletelyremovetheold
filamentbeforetheprintingbyextrudingthefilamentfromSettingsMoveaxis
Extruderuntilthecoloriscompletelychanged.
6.3.8.1 Unloading the filament
Similarproceduretotheloadingoperation.Preheatthenozzleformaterialyouusedlast
time(preassembledprintersareshippedwithPLA).Waitfortemperaturestostabilizeand
useUnloadfilamentoptionfromthemenu.
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Prusa Research Original Prusa i3 MK2 kit User manual

Brand
Prusa Research
Model
Original Prusa i3 MK2 kit
Type
User manual
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