You can create a feature to expand or to contract
the selected features by a specified distance using Offset. A positive
offset expands the volume while a negative value contracts
the volume.
The same offset is applied to the volumes of
each selected feature. If a positive offset is specified,
each of these features expands by the offset maintaining
the wall thickness.
From the Transform section of the action bar, click Offset.
The Offset dialog box appears.
Select the feature you want to offset, say a pocket.
Enter a value to define the offset distance.
This defines the distance to move each of the faces of the bodies that
are being transformed. The distance of all selected features is
applied to expand the volume, if the distance value is positive. Conversely, if the distance value is negative, it is contracted.
Click OK.
Double-click the pocket to edit its defining parameters, like its lateral radius, which impact the offset feature.
In the Pocket dialog box that is displayed,
select the Fillet tab and clear Lateral radius.
Constant fillet walls may not be retained when the offset is applied.
If the walled feature has
Constant wall thickness selected and the lateral faces
are filleted (A), the constant walls are retained with the offset
feature modifier. However, if a walled feature has constant fillet walls
and lateral faces are not filleted (B), the constant walls are not retained at the corner.
(A) Pocket with constant walls and lateral
filleted faces
(B) Pocket with constant walls and no
lateral filleted faces
.
