User's Manual

DOC08010 Rev. A (DRAFT 1) 5–27
Stratasys P750K User Guide
Tall-Left Rule
Thisȱruleȱconsidersȱmodelsȱwhere,ȱafterȱbeingȱorientatedȱonȱtheȱbuildȱtrayȱ
accordingȱtoȱotherȱconsiderations,ȱoneȱsideȱisȱtallerȱthanȱtheȱother.
¾ SinceȱtheȱprintȱheadsȱmoveȱalongȱtheȱXȬaxisȱfromȱleftȱtoȱright,ȱtallerȱ
sectionsȱonȱtheȱrightȱrequireȱtheȱprintȱheadsȱtoȱscanȱunnecessarilyȱfromȱ
theȱleftȱuntilȱreachingȱthem.ȱIf,ȱonȱtheȱotherȱhand,ȱtheȱtallerȱsectionsȱareȱ
positionedȱonȱtheȱleftȱofȱtheȱtray,ȱtheȱprintȱheadsȱonly
ȱhaveȱtoȱscanȱtheȱ
modelȱuntilȱprintingȱtheseȱsections—onceȱtheȱlowerȱpartsȱhaveȱbeenȱ
completed.ȱTherefore,ȱyouȱshouldȱpositionȱtheȱtallerȱsideȱofȱtheȱmodel,ȱ
whenȱpossible,ȱonȱtheȱleft.
Recess-Up Rule
Thisȱruleȱconsidersȱmodelsȱcontainingȱsurfaceȱrecesses.
¾ Recessesȱinȱtheȱsurfaceȱ(likeȱhollows,ȱdrillȱholes,ȱetc.)ȱshould,ȱwhenȱ
possible,ȱbeȱpositionedȱfaceȬup.
Fine-Surface Rule
Thisȱruleȱconsidersȱmodelsȱthatȱhaveȱoneȱsideȱonȱwhichȱthereȱareȱfineȱ
detailsȱ(likeȱtheȱkeypadȱsideȱofȱaȱtelephone).
¾ Theȱsideȱofȱtheȱmodelȱcontainingȱfineȱdetailsȱshould,ȱwhenȱpossible,ȱbeȱ
positionedȱfaceȬup.ȱThisȱresultsȱinȱaȱsmoothȱfinish.
Avoid Support-Material Rule
Thisȱruleȱconsidersȱmodelsȱthatȱhaveȱlargeȱholesȱorȱhollows,ȱopenȱonȱatȱ
leastȱoneȱsideȱ(likeȱaȱpipeȱorȱaȱcontainer).
¾ Itȱmayȱbeȱadvantageousȱtoȱprintȱaȱmodelȱstandingȱup,ȱsoȱsupportȱ
materialȱdoesȱnotȱfillȱtheȱhollow,ȱevenȱthoughȱprintingȱtheȱmodelȱlyingȱ
downȱwouldȱbeȱmuchȱfaster.
Manipulating Objects on the Build Tray
Positioning
Objects on the
Z-Axis
Whenȱyouȱuseȱtheȱautomaticȱpositioningȱoptionȱtoȱarrangeȱobjectsȱonȱtheȱ
buildȱtrayȱ(seeȱ“AutomaticȱOrientation”ȱonȱpage 25),ȱtheȱobjectsȱareȱ
positionedȱdirectlyȱonȱtheȱtray.ȱIfȱyouȱdoȱnotȱinsertȱobjectsȱwithȱautomaticȱ
positioning,ȱtheyȱoftenȱappearȱeitherȱaboveȱorȱbelowȱtheȱtray.
To position objects directly on the tray:
1. Selectȱtheȱobject.
2. FromȱtheȱObjectȱmenu,ȱselectȱ
Lay On.
The following rules are based on the fact that support material is not
required on the top of the printed model.
In practice, the Stratasys system prints all models on the build tray on a one-
millimeter bed of support material. The importance of positioning objects
directly on the build tray with Objet Studio is to correctly display the objects
on the screen.