User's Manual

Handling Printed Models
7–4 DOC-07000 Rev. A
Post-Printing Treatment for Models Printed with Objet VeroClear
ModelsmadewithObjetVeroClearhaveaslightyellowtintwhenremoved
fromtheprinter.Thisisespeciallytrueformodelsprintedwithaglossy
finish.Theyellowtintfadesnaturallyovertime,butyoucangreatly
acceleratethisprocessbyusingasuitablephotobleachingtreatment.
Asarule,bestclarity
isachievedwhenpartsareprintedwithamatte
finish,andtreatedasexplainedbelow.
Photobleachingmodelsinvolvesexposingthemtolight.Toachievehighly
controlledandpredictableresults,aprofessionalilluminationchamberis 
recommended.However,adequateresultsmaybeobtainedusingordinary
desklampsfittedwithsuitablefluorescentelements.
Photo-
Bleaching
Instructions Followtheseinstructionsforphotobleachingprintedmodels.
• Thefluorescentlampsshouldberated45W,6500K.
• Whenusingdesklamps,placethemodelsinacontainercoveredwith
aluminumfoil.Useatleasttwolamps,morewhentreatingmodelsina
largecontainer.
• Arrangethemodelswithenoughspacebetweenthemtoallowlightto
reachallsidesofeachmodel.
• Verifythattheambienttemperaturearoundthemodelsis
approximately40ºC(104ºF).Highertemperaturesmaycausemodel
distortion;lowertemperaturesmaynotproducesatisfactoryresults.
Whenusingdesklamps,youcanachievetherequiredtemperatureby
positioningthelampsapproximately10cm(4in.)abovethemodels.
• Inspectthemodelsaftersixhoursoftreatment.
 Forpartswithamattefinish,thisshouldbeenough.Polishand
lacquertheparts.
 Forpartswithaglossyfinish,continuethephotobleaching
treatmentforupto18hoursmore.
InObjetlaboratories,therewasatintreductionofapproximately70%
withinsixhours.After24hours,tintwasreducedbyapproximately
90%.
Figure 7-2: Figure 7-3:
For more information about this treatment, see the application note
“Objet VeroClear for Desktop Pro Printers” (DOC-24131).