Stratasys Objet260 - Page 222

Objet260 User Guide 7 Handling Printed Models
DOC-37004 Rev.E 7-4
Removing
SUP705with
CausticSoda
Soakmodelsina1-percentsolutionofcausticsoda(sodiumhydroxide)to
removesupportmaterialfromdifficult-to-reachareasandtogivethemodela
smooth,cleanfinish.Theamountoftimeyousoakthemodelinthesolution
dependsonhowdelicateitisandhowmuchsupportmaterialneedstobe
removed,butitistypicallybetweenhalf-an-hourandseveralhours.Inany
case,youshouldremoveasmuchsupportmaterialaspossiblebeforethe
causticsodatreatment,andrinsethemodelthoroughly(withawaterjet)
afterwards.
Warning
Causticsodamaycausechemicalburns,scarringandblindness.Mixingit
withwatergeneratesheatthatcouldigniteothermaterials.Neverpour
waterintocausticsoda.Whendilutingthesolution,alwaysaddcaustic
sodatowater.Takeadequatesafetyprecautions;alwaysusenitrile
gloveswhenhandlingcausticsodaandmodelssoakedinit.
Removing
SUP706with
CausticSoda
andSodium
Metasilicate
Soakmodelsina2-percentsolutionofcausticsoda(sodiumhydroxide)and
sodimmetasilicate(Na
2
SiO
3
)toremovesupportmaterial.Theamountoftime
yousoakthemodelinthesolutiondependsonhowdelicateitisandhow
muchsupportmaterialneedstoberemoved.Rinsethemodelthoroughly
underrunningwaterafterwards.
SUP706willdissolveintothecausticsodaandsodiummetasilicate
solutionandsaturateit,reducingitseffectiveness.Replacethesolution
whentheSupportmaterialreaches20%ofthesolution(after
approximatelyonemonthofaverageuse).
Warning
Causticsodamaycausechemicalburns,scarringandblindness.Mixingit
withwatergeneratesheatthatcouldigniteothermaterials.Neverpour
waterintocausticsoda.Whendilutingthesolution,alwaysaddcaustic
sodatowater.Takeadequatesafetyprecautions;alwaysusenitrile
gloveswhenhandlingcausticsodaandmodelssoakedinit.