Basic 3D commands in AutoCAD ~ Ourengineeringlabs

Basic 3D commands in AutoCAD

3D Commands in AutoCAD

AutoCAD provides a robust set of commands for creating and manipulating 3D objects. Here are some essential 3D commands, along with their explanations, syntax, and examples.

1. EXTRUDE

Purpose: Converts 2D objects into 3D solids by stretching them along a specified path.

Syntax: EXTRUDE <object> <height>

Example: EXTRUDE P1 50

This command will extrude the polyline P1 to a height of 50 units, creating a 3D solid.

2. REVOLVE

Purpose: Creates a 3D solid by revolving a 2D object around an axis.

Syntax: REVOLVE <object> <axis_start_point> <axis_end_point> <angle>

Example: REVOLVE P1 0,0 0,1 360

This command will revolve the polyline P1 around the Y-axis (defined by 0,0 to 0,1) through 360 degrees.

3. SWEEP

Purpose: Creates a 3D solid or surface by sweeping a 2D object along a path.

Syntax: SWEEP <object> <path>

Example: SWEEP P1 P2

This command will sweep the polyline P1 along the path defined by polyline P2.

4. LOFT

Purpose: Creates a 3D solid or surface by lofting between several cross sections.

Syntax: LOFT <cross_sections>

Example: LOFT P1 P2 P3

This command will create a lofted shape passing through the cross-sections defined by P1, P2, and P3.

5. UNION

Purpose: Combines two or more 3D solids into a single solid.

Syntax: UNION <solid1> <solid2> ...

Example: UNION S1 S2

This command will combine the solids S1 and S2 into one solid.

6. SUBTRACT

Purpose: Subtracts the volume of one 3D solid from another.

Syntax: SUBTRACT <solid1> <solid2>

Example: SUBTRACT S1 S2

This command will subtract the volume of solid S2 from solid S1.

7. INTERSECT

Purpose: Creates a 3D solid from the intersecting volume of two or more solids.

Syntax: INTERSECT <solid1> <solid2> ...

Example: INTERSECT S1 S2

This command will create a new solid from the volume where solids S1 and S2 overlap.

8. SLICE

Purpose: Slices a 3D solid into two separate solids along a specified plane.

Syntax: SLICE <solid> <plane>

Example: SLICE S1 XZ

This command will slice the solid S1 along the XZ plane.

9. SECTION

Purpose: Creates a 2D cross-sectional view of a 3D solid.

Syntax: SECTION <solid> <plane>

Example: SECTION S1 XY

This command will create a 2D cross-section of the solid S1 along the XY plane.

10. PRESSPULL

Purpose: Creates a 3D solid by extruding or pushing a closed boundary.

Syntax: PRESSPULL <boundary> <height>

Example: PRESSPULL P1 20

This command will extrude the boundary P1 to a height of 20 units, creating a 3D solid.

Basic AutoCAD 3D part drawings

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