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AutoCAD and Its Applications—Basics
Copyright Goodheart-Willcox Co., Inc.
Using the JOIN Command U s ing the JOIN Comm a nd
While drawing and editing, you sometimes create multiple objects that should be
one object. These multiple objects are cumbersome to work with and increase the size
of the drawing fi le. The
JOIN
command is one option for combining lines, arcs, poly-
lines, polyline arcs, splines, and elliptical arcs. You can join objects of the same type or
specifi c combinations of objects.
Joining the Same Object Type
Access the
JOIN
command and select objects of the same type to join. Lines must
be collinear in order to be joined. Lines can share the same endpoint, overlap, or have
gaps between segments. See Figure 11-11. Polylines must share a common endpoint
and cannot overlap or have gaps between segments. See Figure 11-12. The same rules
apply for joining splines.
Arcs must share the same center point and radius. They can overlap, share the
same endpoint, or have gaps between segments. See Figure 11-13. Similar rules
apply for joining elliptical arcs, except elliptical arcs must share the same axes.
Pick arcs or elliptical arcs in a counterclockwise direction to close the nearest gap.
JOIN
Ribbon
Home
Modify
Join
Type
JOIN
UNITE
RECOMBINE
J
Figure 11-11.
Lines must be collinear to join, but there can be gaps between segments, as shown. Lines can
also share the same endpoint or overlap.
Two Collinear Lines
One Line after Joining
Figure 11-12.
Polylines join only if they share an endpoint. The same rule applies for joining splines.
Gap Prevents Joining Polylines Common Point Needed to Join Polylines
Figure 11-13.
Arcs must share the
same center point
and radius in order
to join, but there can
be gaps between
segments, as shown.
Arcs can also share
the same endpoint
or overlap.
Before Joining After Joining