EXTRUDE COMMAND IN AUTOCAD
Creates a 3D solid from an object that encloses an area, or a 3D surface from an object with open ends.Objects can be extruded orthogonally from the plane of the source object, in a specified direction, or along a selected path. You can also specify a taper angle.
Step 1: objects to extrude
Specifies the objects to extrude.
Note: Select face and edge subobjects by pressing Ctrl while you select them.
Step 2: mode for solid or surface extrusion
Controls whether the extruded object is a solid or a surface.
Surfaces are extruded as either NURBS surfaces or procedural surfaces, depending on the SURFACEMODELINGMODE system variable.
Step 3: height of extrusion
Extrudes selected objects along the positive or negative Z axis. The direction is based on the UCS that was current when the object was created, or (for multiple selections) on the original UCS of the most recently created object.
Step 4: direction
Specifies the length and direction of the extrusion with two specified points. (The direction cannot be parallel to the plane of the sweep curve created by the extrusion.)
Step 5: Taper angle
Specifies the taper angler for the extrusion.
Positive angles taper in from the base object. Negative angles taper out. The default angle, 0, extrudes a 2D object perpendicular to its 2D plane. All selected objects and loops are tapered to the same value.
Specifying a large taper angle or a long extrusion height can cause the object or portions of the object to taper to a point before reaching the extrusion height.
Individual loops of a region are always extruded to the same height.
When an arc is part of a tapered extrusion, the angle of the arc remains constant, and the radius of the arc changes.
- Angle of taper. Specifies the taper between -90 and +90 degrees.
- Specify two points. Specifies the taper angle based on two specified points. The taper angle is the distance between the two specified points.
Drag the cursor horizontally to specify and preview the taper angle. You can also drag the cursor to adjust and preview the height of the extrusion. The dynamic input origin should be placed on the extruded shape, on the projection of the point to the shape.
When you select the extruded object, the position of the taper grip is the correspondent point of the dynamic input origin on the top face of the extrusion.
SOURCE : AUTODESK KNOWLEDGE CENTER
Step 6: STEP-BY-STEP PROCEDURE IMAGES
DRAW SECTION IN 2D
MAKE YOUR SKETCH INTO REGION BY USING "REGION" COMMAND
SELECT OBJECTS USING CURSOR AND CLICK ENTER. IT WILL CREATE REGIONAL PLANE SECTION
REGION WILL BE DISPLAYED IN MODELLING WORK SPACE OF AUTOCAD. AFTER CREATING THIS REGION CHOOSE EXTRUDE ICON FROM MODELING TOOLBAR
SPECIFY HEIGHT FOR EXTRUSION AND CLICK ENTER BUTTON
THE FINAL EXTRUDED PART WILL BE LOOK LIKE THE ABOVE MENTIONED FIGURE.
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