Stratasys Objet24 - Model Orientation

Using Objet Studio
5–20 DOC-34014 Rev. C
Model Orientation
Theorientationofmodelsonthebuildtrayaffectshowquicklyand
efficientlytheywillbeproducedbythe3Dprinter,whereandhowmuch
supportmaterialisused,andwhetherornotmodelpartswillhaveaglossy
finish.Therefore,youshouldconsideravarietyoffactorswhendeciding
how
toplacemodelsonthetray,usingthefollowingpositioningrules.
X-Y-Z Rule
Thisruleconsidersamodelʹsouterdimensions.
¾ SincetheprintheadsmovebackandforthalongtheX‐axis,theprinting
timealongthisaxisisrelativelyshort,comparedtoprintingtimealong
theY‐axisandZ‐axis.Fromthispointofview,itisadvisabletoplacethe
objectʹslargestdimensionalongtheX‐axis.
¾ Anysurfacesthatcomeintocontactwithsupportmaterialsbecome
matte.
¾ Sincemodelsarebuiltup,ontheZ‐axis,in28‐micronlayers,itisvery
time‐consumingtoprintatallobject.Fromthispointofview,itis
advisabletoplacetheobjectʹssmallestdimensionalongtheZ‐axis.
¾ Sincetheprintheadsmeasureabout2inches(5centimeters)onthe
Y‐axis,modelsmeasuringlessthanthis(ontheY‐axis)areprintedin
onepass.Fromthispointofview,itisadvisabletoplacetheobjectʹs
intermediatedimensionalongtheY‐axis.
Tall-Left Rule
Thisruleconsidersmodelswhere,afterbeingorientatedonthebuildtray
accordingtootherconsiderations,onesideistallerthantheother.
¾ SincetheprintheadsmovealongtheX‐axisfromlefttoright,taller
sectionsontherightrequiretheprintheadstoscanunnecessarilyfrom
theleftuntilreachingthem.If,ontheotherhand,thetallersectionsare
positionedontheleftofthetray,theprintheadsonly
havetoscanthe
modeluntilprintingthesesections—oncethelowerpartshavebeen
completed.Therefore,youshouldpositionthetallersideofthemodel,
whenpossible,ontheleft.
Recess-Up Rule
Thisruleconsidersmodelscontainingsurfacerecesses.
¾ Recessesinthesurface(likehollows,drillholes,etc.)should,when
possible,bepositionedface‐up.
Fine-Surface Rule
Thisruleconsidersmodelsthathaveonesideonwhichtherearefine
details(likethekeypadsideofatelephone).
¾ Thesideofthemodelcontainingfinedetailsshould,whenpossible,be
positionedface‐up.Thisresultsinasmoothfinish.
The following rules are based on the fact that support material is not
required on the top of the printed model.