Objectives of Chapter 4

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Christopher C. Leoanrd

• Objectives of Chapter 4
• Once this chapter is completed, a students
  abilities will include
• Methods of Selecting Modify Commands
• Creating Rectangular Arrays
• Creating Polar Arrays
• Understanding the Different Modify Commands
• BREAK Command
• CHAMFER Command
• COPY Command

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Christopher C. Leoanrd

• Objectives of Chapter 4 (cont.)
• Understanding the Different Modify Commands
  (cont.)
• EXPLODE Command
• EXTEND Command
• FILLET Command
• LENGTHEN Command
• MIRROR Command
• MOVE Command
• OFFSET Command
• PEDIT Command
• ROTATE Command

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Christopher C. Leoanrd

• Objectives of Chapter 4 (cont.)
• Understanding the Different Modify Commands
  (cont.)
• SCALE Command
• STRETCH Command
• TRIM Command
• Using Express Tools Applications for Modifying
• Using Multiple Entity Stretch
• Using Move Copy Rotate
• Using Cookie Cutter Trim (Extended Trim)
• Using Polyline Join
• Using Multiple Pedit

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Christopher C. Leoanrd

• Methods of Selecting Modify Commands
• Select modify commands in the Modify menu
• Select modify commands in the Modify toolbar

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Christopher C. Leoanrd

• Creating Rectangular Arrays
• The ARRAY command allows you to arrange multiple
  copies of an object or group of objects in a
  rectangular pattern
• Example of a rectangular array using 2 rows, 2
  columns, and spacing of 100

Array objects
Original object
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Christopher C. Leoanrd

• Creating Polar Arrays
• The ARRAY command allows you to arrange multiple
  copies of an object or group of objects in a
  circular or polar pattern
• Example of a polar array with 4 items, 360 degree
  angle, and rotated objects

Array Objects
Original object
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Christopher C. Leoanrd

• Creating Polar Arrays (cont.)
• Example of a polar array with 4 items, 360 degree
  angle, and non-rotated objects
• The polar array can be useful for adding bolt
  holes in a partial or full circle

Original object
Original object
Array objects
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Christopher C. Leoanrd

• The Break Command
• Used to partially delete a segment of an object
• Command BR

2
Points selected for break
1
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Christopher C. Leoanrd

• The Chamfer Command
• Used to produce an inclined surface at an edge of
  two intersecting line segments to finish a sharp
  corner
• Command CHA
• Chamfer sizes are determined by 2 input methods
• Input by 2 distances
• distance and angle

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Christopher C. Leoanrd

• The Copy Command
• Used to duplicate an object or group of objects
• Command CP
• Hint Select base point either on the original
  object or on a reference point to make the copy
  easier to locate

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Christopher C. Leoanrd

• The Explode Command
• Used to separate an grouped object back into
  its individual parts
• Used on blocks or cut and paste objects to get
  them back to the original entity configuration
• Command X

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Christopher C. Leoanrd

• The Extend Command
• Used to extend objects to a specified boundary
  edge
• Command EX

After extend
Before Boundary line
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Christopher C. Leoanrd

• The Fillet Command
• Used to round an edge formed in the corner of an
  object
• Command F
• Set the radius before selecting edges
• Hint After setting radius, the fillet command
  needs to be restarted before you can use the
  fillet radius change

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Christopher C. Leoanrd

• The Lengthen Command
• Used to change the length of a selected object
  without disturbing other object qualities such as
  angles of lines or radii of arcs
• Command LEN

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Christopher C. Leoanrd

• The Mirror Command
• Used to create a mirrored copy of an object or
  group of objects
• Command MI
• Mirror line is created by selecting 2 points

Mirror Line
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Christopher C. Leoanrd

• The Move Command
• Used to reposition an object or group of objects
  to a new location
• Command M
• Hint Select base point either on the original
  object or on a reference point to make the move
  points easier to locate

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Christopher C. Leoanrd

• The Offset Command
• Used for creating one object parallel to another
• Copies objects at preset distances
• Use to layout centerlines and for beginning
  drawings
• Command OF

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Christopher C. Leoanrd

• Pedit Command
• Used to edit polylines. These modifications can
  come in many forms
• Width Changes the overall width of the polyline
• Join Joins segments (polyline and non-polyline)
  to make a single polyline
• Spline Fit Curve Spline creates a smooth curve
  from the points Fit curve produces a more
  radical curve
• Linetype Generation changes the linetype style
  between segment points

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Christopher C. Leoanrd

• Pedit Command
• Chamfers, fillets and offsets, when applied to
  polylines they change all the segments in the
  polyline

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Christopher C. Leoanrd

• The Rotate Command
• Used to change the orientation of an object or
  group of objects by identifying a base point and
  a rotation angle that completes the new
  orientation
• Command RO

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Christopher C. Leoanrd

• The Scale Command
• Used to change the overall size of an object
• Command SC
• Scale of 0.50 is 50 of original size
• Scale of 2 is 100 bigger than original size

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Christopher C. Leoanrd

• The Stretch Command
• Used to move a portion of a drawing while still
  preserving the connections to parts of the
  drawing remaining in place
• Command S
• Must use a crossing windowto select objects

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Christopher C. Leoanrd

• The Trim Command
• Used to partially delete an object or group of
  objects based on a cutting edge
• Command TR

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• Express Tools Applications for Modifying
• Provides more functionality for modifying objects
• Select commands from Express Modify Menu
• Multiple Entity Stretch
• Move Copy Rotate
• Extended Trim
• Multiple Pedit.

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Christopher C. Leoanrd

• Multiple Entity Stretch (MSTRETCH)
• Allows multiple Stretch crossing selections to
  stretch multiple objects within a single
  Stretch command
• Always in crossing selection mode

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Christopher C. Leoanrd

• Move Copy Rotate (MOCORO)
• A combination command that allows a user to
  combine the editing movements into a single tool
• Scale option is also available inside the command

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Christopher C. Leoanrd

• Extended Trim (Cookie Cutter Trim) (EXTRIM)
• A speed enhancement to the current trim tool
• Select an object as a cutting edge, pick a side
  to trim, and any objects in contact with the
  selected cutting edge will be trimmed on the
  side that was selected

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• Polyline Join (PLJOIN)
• Cleans up polyline intersections that occur when
  there is either a gap or intersection of
  polylines.
• Fuzz factor relates to the gap or extension size
  that will be repaired during this command

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• Multiple Pedit (MPEDIT)
• Multiple PEDIT allows for multiple objects to be
  converted into polylines
• Single step process instead of 2 step process
• PEDIT Join
• Use when converting objects into several
  different polylines