Learning Targets
- Choose a sketch plane intentionally.
- Create a readable 2D base sketch.
- Explain how sketch orientation affects the final model.
IED Unit 2 • Lesson 2.3
Sketch Planes and 2D Sketching
Focus question: How does a 2D sketch become the foundation of a CAD model?
Mission Briefing
Today’s Plan
Use this page with the lesson presentation, your engineering notebook, and the tools or evidence assigned for Build the Base Sketch on the Right Plane.
Success Looks Like
Your sketch begins on a plane that matches the part’s intended shape and view.
LaunchLearnModelCheckSubmit
Opening Prompt
What could go wrong if you start sketching on the wrong plane?
Connect your response to the decision, evidence, or quality standard required for Build the Base Sketch on the Right Plane.
Reveal: useful CAD thinking move
The model can become hard to orient, edit, document, or assemble because the geometry begins from a confusing reference.
Core Skill
What We Are Practicing
The sketch plane controls where geometry begins.
2D sketches define the base shape of most 3D parts.
Poor sketch placement creates confusing models.
Fusion & Fabrication Help
Video Help
Fusion 360 - How to Create Planes for Better Sketching
Use this tutorial when choosing an origin plane or creating a construction plane for a new sketch.
Pause, replay, or open the tutorial in a new tab while you work. Follow the lesson requirements when the video uses a different example.
Lesson Interactive
Choose the Best Sketch Plane
The tolerance tester begins as a wide flat profile. Select the plane that captures the most useful base shape before thickness is added.
Intended Part
The base sketch should show the largest face and the locations of repeated fit features.
Select a Starting Plane
Choose the plane that shows the full flat footprint before extrusion.
Your Task
Build the Base Sketch on the Right Plane
Create a simple closed profile on an intentional sketch plane and explain how that choice supports the shape of the part.
- Inspect the intended part orientation.
- Select the plane that best represents the base profile.
- Draw the main closed profile with clean connected geometry.
- Finish the sketch and inspect it from an isometric view.
Quality check: The profile is closed, readable, and located on a plane that makes the next modeling step straightforward.
What You Will Submit
Base Sketch Evidence
Submission standard: The profile is closed, readable, and located on a plane that makes the next modeling step straightforward.
Resources
Lesson Resources
Lesson 2.3 PowerPoint
Use the lesson slides for guided practice, interactive checks, and the exit ticket.
Introduction to Engineering Design
Return to the IED course hub for units, resources, certifications, and current course information.