Lesson 3: Chamfering and Circular Logic
Duration of Days: 1.5
Lesson Objective
Students will apply the Chamfer tool and Circle tool to recreate Plate 1-2.
What is the difference between a "distance" chamfer and an "angle" chamfer?
How does the Offset tool help locate the center of a circle on a plate?
Chamfer, Radius vs. Diameter, Offset, Intersection Snap.
CT CADD.06.02: Perform advanced editing (Chamfer/Fillet).
CT CADD.05.03: Use drawing commands to create geometric shapes.
Students work on Plate 1-2. They will use OFFSET to find hole centers and the CHAMFER command to bevel edges. They will practice switching between the "Distance" and "Angle" options in the Chamfer command.
Purpose: To learn how to handle angled transitions in mechanical parts.
DOK Level: 2.
Use color-coded construction lines to show the "offset" paths before they are trimmed.
Peer-review check: Students swap desks and verify their partner's chamfer distances against the book.
CAD Book - Basic Mechanical Drafting 1-2.