In chapter 1 lesson 6, we build on constraints by introducing dimensions, a powerful tool for locking in measurements and fully defining your sketches. You’ll learn how to move from partially defined (blue) geometry to a fully constrained (black) sketch that’s ready for 3D modeling.

We’ll walk through switching between units like millimeters and inches, using math directly inside dimensions for quick calculations, and understanding how profiles serve as enclosed shapes that form the foundation for 3D parts. You’ll also see how advanced constraints such as tangent and coincident work, how the mirror tool can duplicate features symmetrically, and how to test the robustness of your design by editing dimensions and watching the sketch adapt automatically.

What You’ll Learn

• Define sketches with dimensions to move from blue (partial) to black (fully constrained).
• Switch between units and use math in dimensions for quick accuracy.
• Understand profiles as the foundation of 3D parts.
• Apply advanced constraints (tangent, coincident) and use the mirror tool for symmetry.
• Test and edit dimensions to build a robust, flexible sketch ready for 3D modeling.