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SCREEN PRINTING TUTORIAL print on any flat surface Experiment with biodegradable inks Make custom packaging for your project ONLINE BOOKING & REPOSITORY

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Page 1: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

SCREEN PRINTINGTUTORIAL

printonanyflatsurface

Experimentwithbiodegradableinks

Makecustompackagingforyourproject

ONLINE BOOKING & REPOSITORYONLINE BOOKING & REPOSITORY

Page 2: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

• Film Positive

• Inpreparingyourmotifforprint,keepyourartboardconstraintsinmind,workingreyscale,usePDFandalwaysprintyourfilm100%.

• Dependingontheprinter,youshoulduse“kalkepapir”orregularoverheadsheets.Makerlabwillsoonacquireaplotterforthispurpose.Thatsaid,anythingblockinglightiseligibleforexposure.Asshown,youcanevenmakea“filmpositive”inthelasercutterifyouwish:

• Halftone Image

inPhotoshop,placeandscaleyourimageinadocumentthatcorrespondswithyourprintout(A3,e.g.).

• Goto: IMAGE>MODE>GREYSCALE>BITMAP:• 300pixels/inch• Method:HalftoneScreen• Frequency:54• Angle:45• Shape:Ellipse.

Saveaspdf.Thisgoesforanythingthathashalftone(grey)properties.Rememberthatthescreenmeshisanextremelybinarything;it´seitherlightornon-light.Noin-between.

Page 3: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

• Emulsion

• Stirtheemulsiontoavoidairbubbles,pouraheartyportionintothescoopcoater,thenwithonehandonthescreenandtheotheronthescoop,firmlycoatthemeshinoneswiftmovement.Makesuretoapplyagoodamountofpressure.tiltthescoopbackasyoureachthetopofthescreenandlettherestoftheemulsionfallbackintothescoop.Ifsmearsoccurs,alittlepieceofcardboardcanbehandytoevenouttheedgesofyourcoating.

• Returntheresidueemulsionbackintothecontainer.Sealthelid.• Leavethescreentodryinthecupboard.Cleanthescoop.

Page 4: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

• Exposure

• Placeyourfilmfacingupontheexposureunit.Makesurethattheglassplateisfreefromanyspecsordust,sincethiswillleaveanimprinttoointheend.Agoodideaistoleadapieceofhosefrominsidethescreenandout,inordertoincreasethevacuum.Closethelidandremembertofastentheclamps.

• Turnonthevacuum,byturningtheknobfrom0toAuto.Aftersome45seconds,switchbackto0.

• Getastopwatchreadyonyourphone,thenturnthesameknobfrom0toHand,andexposeyourscreenfor25seconds.

Page 5: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

• Rinse

• Bringthescreentothewashroom(dontwastetimeinthebrightlight)andusethegarden-hosetoquicklywetthemeshonbothsides.Patientlywashdowntheentirescreen,andsoonyourmotifwillappear.Clearthemeshofallresidueemulsion.Atsomepoint,youwillnoticeachangeofcolor(aslightlymilkyblueveil)thisisimportanttogetridoff,asitislikelytoclutterbackintotheopenmeshofyourstencil.withyourhand,gentlyscrubitfreeofthemeshandbesuretoridofanypocketsofemulsionstoo.

• Leavethescreentodry(intherack,notthecupboard,sincethiswilllikelycreatecondensationandpossiblyruinthestencil)

Page 6: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

• Rigging and Registration

• Placeandfastenyourscreenonthebench,usemaskingtapeandpapertosealthegapsandedges(orothermotifs)inyourscreenfromclutteringwithink.

• Tapeyouryouroriginalfilmtoyoursubstrate(paper,cardboard)whereyouwantittobe,andusetheguidestoalignyoursubstratewiththemotifonyourscreen.pressdownonthemeshtoorientate.turnonthevacuumwhenyouralignmentisadequate,nowthesubstrateisbeinghelddowninplace.liftthebenchslightly,sustainingthevacuum,andplacetwocardboardmarkersasshown,thiswillensureaconsistencyinregistrationandallowforamoresmoothworkflow.

Page 7: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

• Printing

• Prepareyourink:assumingyouareusingawatersolventink(aquaset),addalittlewaterandstirit,untilyougettherightviscosity.(smoothandcreamy-like)

• Agoodideaistohavesomeassistancewhileprinting,asyouwilleventuallyendupwithinkonyourhandsetc.Sohavingsomebodywhocanhelpyoumanagingyourpaperse.g.,toandfromtheprint-table,isagreatadvantage.Remember;onehastoworkefficientlyandfast,withoutinterruption,otherwisetheinkwillclutterandruinthemeshforgood.

• Whenyouareallsetandready,placeagoodportionofinkwithaspatularattheendoffthescreentowardsyouasshown.>-Placeyoursubstrate,andturnonthevacuum.Withthebenchathalfmast,firmlycoatyourprint-areawithinkbypushingthesqueegeeawayfromyourself.Thisiscalledflooding.

• Lowerthebench,andwithbothhands,pullthesqueegeeina60degreeangletowardsyourself,whileapplyinganevenpressure,swiftly.Thisiscalledstroking(NOTE:thistakespractice.)

• Liftthebench,andrepeatthefloodingasbefore,beforeyouremoveyoursubstrateoranythingelse.Itisparamounttokeeptheopenmeshviscous,astheinkdriesoutincrediblyfast.Whenyouhavemadeyourlastprint,donotfloodinkbackintothemesh.

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Page 8: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

• CLEANING

• Withaspatular,returntheresidueinkfromthescreenandthesqueegeebackintoit’scontainer.

• Bringthescreenandthesqueegeetothewashoutboothtobecleaned,byusingthe‘kitchenhose’.Makesuretoridofallpocketsofink,sinceeventhetinyspeckscankeepbleedingintotheopenmesh.

Page 9: SCREEN PRINTING TUTORIAL - GitHub Pages · flow after use) and spray the screen free of any trace of emulsion. A so-called ‘ghost image’ of any previous stencils might be visible

• WASH OUT

• oremovetheemulsion(anddeleteyourstencil)mixSaatiRemoverwithwater(1:25)inthescreencleanerspray.NOTE:thisishighlytoxic,sobyallmeansuseglasses,facemaskandgloveswhenwashingoutandmixingthestencilcleaner.

• Spraythesolutionontothescreenandletitsitfor1-2minutes(notmore).Fixthegardenhosetothehighpressuresprayer(remembertoturnoffthewaterflowafteruse)andspraythescreenfreeofanytraceofemulsion.Aso-called‘ghostimage’ofanypreviousstencilsmightbevisiblebutbyholdingthescreenupagainstthelightyoucantellwhetheritisemulsionblockingorjustinkdyeofthemesh.

• Lastly,spraydegreaserontobothsidesofscreenandwipeitwithacleancloth.Thenwashoutagain,andplaceitbackintotherack.

Andlikethecycleoflife,thewholeprocessrepeatsitself.Godsspeed!