Lecture on Chamfer Command in AutoCAD 2018

Introduction

• Instructor: Randy Dobson
• Location: Houston, Texas
• Topic: Chamfer command in AutoCAD 2018
• Relevance: Common term in engineering for chamfered edges.

Chamfer Basics

• Chamfered Edge: A corner with two equal distances forming 45-degree angles.
• Chamfer vs. Fillet:
  • Chamfer: Straight corners
  • Fillet: Rounded corners

Using Chamfer Command

Setting Distances

• Default chamfer setting is 2 by 2.
• Changing Distances:
  • Input first distance and hit enter to automatically set the second distance (e.g., 5 by 5).
• Example:
  • A 5 by 5 chamfer from the corner results in equal lengths on both sides.

Unequal Distances

• Possible to give different distances for each side.
• Example:
  • Setting 5 and 10: First selected line gets 5, second gets 10.
  • Reversing selection changes which side has the longer chamfer.
• Architectural Use:
  • Different distances can resemble slopes like roof lines.
  • Example distances: 10 and 25, or 5 and 15.

Trim Options

• Trim vs. No Trim:
  • Chamfer command default trims excess lines.
  • Option to select "No Trim" retains all line segments.
• Example:
  • Set distances of 5 and 5, select "No Trim" to keep all parts.

Special Cases

• Zero Distance:
  • Setting chamfer distances to 0 creates a perfect corner.

Important Considerations

• Check settings before selecting lines.
• After line selection, settings cannot be changed without redoing.

Conclusion

• Chamfer is a powerful command similar to fillet.
• Ensure proper settings are applied before utilization.

End of Lecture on Chamfer Command