How to Draw a Shaft in AutoCAD: Step-by-Step Guide

To draw a shaft in AutoCAD, use the LINE or CIRCLE commands to create the shaft's profile, then use EXTRUDE or REVOLVE to make it 3D. Start by drawing the shaft's cross-section and then apply 3D tools to shape it.

Syntax

Here are the main AutoCAD commands to draw a shaft:

• LINE: Draw straight lines for the shaft's length.
• CIRCLE: Draw circles for the shaft's diameter.
• EXTRUDE: Convert 2D shapes into 3D solids by extending them.
• REVOLVE: Create a 3D shaft by revolving a 2D profile around an axis.

Use these commands in sequence to build the shaft shape.

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LINE
CIRCLE
EXTRUDE
REVOLVE

Example

This example shows how to draw a simple cylindrical shaft by drawing a circle and extruding it.

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1. Type <code>CIRCLE</code> and press Enter.
2. Click to set the center point.
3. Enter the radius (e.g., 10) and press Enter.
4. Type <code>EXTRUDE</code> and press Enter.
5. Select the circle.
6. Enter the extrusion height (e.g., 100) and press Enter.

Output

A 3D cylindrical shaft with radius 10 units and length 100 units appears.

Common Pitfalls

Common mistakes when drawing shafts in AutoCAD include:

• Not setting the correct units before drawing, causing size errors.
• Forgetting to switch to 3D workspace or view, so extrusion appears flat.
• Using LINE instead of CIRCLE for round shafts, resulting in incorrect shapes.
• Not selecting the full profile before extruding or revolving.

Always check your workspace and selection carefully.

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Wrong:
LINE
Draw lines to try to make a circle shape.

Right:
CIRCLE
Draw a perfect circle for the shaft base.

Quick Reference

Summary tips for drawing shafts in AutoCAD:

• Use CIRCLE for shaft diameter.
• Use EXTRUDE to create length.
• Use REVOLVE for complex profiles.
• Set units before starting (command: UNITS).
• Switch to 3D view to see the shaft properly.

Key Takeaways

Use CIRCLE and EXTRUDE commands to create a simple 3D shaft.

Set correct units and workspace before drawing to avoid size and view issues.

REVOLVE is useful for shafts with complex cross-sections.

Always select the full profile before applying 3D commands.

Switch to 3D view to visualize the shaft properly.