8

826 Chapter 8: Modifiers
Errors group
Choosing one of these options selects incorrect
geometry specific to the choice, and selects it
depending on the option chosen in the Selections
group.
Open Edge—Checks for open e dges (holes).
Double Faces—Checks for faces that share the same
3D space.
Spike—Checks for spikes, which are isolated faces
that share only one edge with the object.
Multiple Edges—Checks for faces that share more
than one edge.
Every thing—Checks for all of the above.
Tip: While checking Everything takes the longest
amount of time, it is recommended if you plan to
usetheSTLfileforgeneratingaphysicalmodel.
Selections group
These options specify the level of incorrect
geometr y that’s selected, based on the settings in
the Errors group.
Don’t S elect—When on, STL Check doesn’t select
any part of objects in error.
Select Edges—When on, STL Check marks the
edges of faces in error by selecting them. The
selection of er roneous edges is visible in viewports.
Select Faces—When on, STL Check marks the
faces of any object in error by selecting them. T he
selection of erroneous faces is visible in viewports.
Chang e Ma t -ID —When on (the default), STL
Checkalsomarksfacesinerrorbyassigningthem
a unique material ID. Use the spinner to choose
the value of the material ID t hat STL Check uses.
Che ck—Turn on to perform the STL check. For
complex models, expect a pause between the t ime
you turn this on, and the time you see the reported
errors in the St atus group. Default=off.
Status—Displays the number of errors when C heck
is on.
Tip: If Select Edges is turned off, you can see
faces in error by applying an
Edit Mesh modifier
(page 1–613)
and selecting by material ID at
theFacesub-objectlevel. Youcanalsoassigna
Multi/Sub-Object material (page 2–1403) to the
object to help you see where the errors are.
Stretch Modifier
Select an object. > Modify panel > Modifiers List >
Object–Space Modifiers > Stretch
Select an object. > Modifiers menu > Parametric
Deformers > Stretch
The Stretch modifier simulates the traditional
animation effect of "squash-and-stretch." Stretch
applies a scale effect along a specified st retch axis
and an opposite scale along the two remaining
minor axes.
Theamountofoppositescalingontheminoraxes
varies, based on distance from the center of the
scale effect. The maximum amount of scaling
occurs at the center and falls off toward the ends.
Applying a Stretch modifier to the object on the left creates
the object on the right.