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CADD-1 Lesson 6

Modify and Construct Commands

CommandDefinition
ERASE command removes selected entities from a drawing file.
COPY command creates duplicate copies of selected entities.
MOVE command moves the selected entities from one location to another.
OFFSET command allows for the creation of offset curves and parallel lines at a specified distance.
MIRROR command reflects selected entities around a user specified access.
Symmetrical having identical forms on either side of an axial line. (Reflective)
TRIM command erases portions of selected entities that cross a specified boundary.
EXTEND command allows the operator to lengthen a line arc, or polyline to meet an existing boundary.
STRETCH command allows you to move a portion of a drawing while retaining connections to other parts. (Can only use the crossing option)
Fillet a curved surface of constant radius blending two otherwise intersecting surfaces.
Chamfer Beveled edge blending two otherwise intersecting surfaces
FILLET command constructs an arc of specified radius between two lines, arcs, or circles.
CHAMFER command constructs a beveled edge of a specified distance or angle.
BREAK command Erases portions of an object. (Not very accurate)
CHANGE PROPERTIES changes the color, linetype, layer, lineweight, thickness, etc.. of selected objects.
MATCH Properties Copies the properties of a selected object and transposes those properties to an existing object
ROTATE command moves objects about a basepoint at a specified angle.
Dynamic Modifying Allows for modification using the mouse, not very accuarate in most cases.
Rectangular Array Creates an array defined by the number of rows & columns of copies of the selected objects
Polar Array Creates an array defined by specifying a center and #of objects about which AutoCAD replicates at an equal distance.
SCALE command enlarges or reduces selected objects equally.
EXPLODE command shatters a polyline or block into it's individual entities.
U command Backs up one command at a time.
UNDO command Allows you to back up a specific number of commands or set marks to back up to.
REDO command Allows you to reverse the previous undo command.
TIME command Provides a means to track the time spent on a drawing, provides the current date, & time, and when the drawing was last updated.
SNAP command when on, snaps your crosshairs along an imaginary grid of dots.
GRID command Allows you to specify a spacing, reflects the limit settings, and provides a visual means of referencing distance.
PLINE command Creates a group of polyline segments as a single entity. They are more versatile than regular line segments.
Polyline A 2D polyline is a connected sequence of segments created as a single planar object.
PEDIT command Allows you to join 2D polylines, converting lines and arcs into 2D polylines, and converting polylines into curves that approximate B-splines (spline-fit polylines).
B-Spline Uses a sampling of of points to approximate mathematical functions that define a complex curve.
Created by: tmurphy