How and Why to Fully Constrain Sketches in Fusion 360

The video tutorial explains the importance of fully defining 2D sketches in Fusion 360, emphasizing that while not required, it is a best practice. It covers understanding geometry colors, where blue indicates undefined geometry and black indicates fully defined geometry. The tutorial demonstrates how to apply constraints and dimensions to achieve a fully defined sketch, using a flange as an example. It highlights the use of symmetry and construction lines to minimize dimensions and maintain design intent. The tutorial concludes with checking the sketch status in the browser and ensuring all geometry is fully defined.

What does blue geometry indicate in a Fusion 360 sketch?

• The geometry is locked.

• The geometry is fully defined.

• The geometry is hidden.

• The geometry is not fully defined.

Why is it recommended to use constraints over dimensions when defining sketches?

• Constraints are easier to manage.

• Dimensions are more accurate.

• Constraints are less visible.

• Dimensions are faster to apply.

What is the purpose of a construction line in a sketch?

• To add a dimension.

• To serve as a reference.

• To change the color of geometry.

• To delete a constraint.

How can you ensure a circle remains centered vertically in a sketch?

• By using a symmetry constraint.

• By adding a horizontal dimension.

• By using a construction line and constraints.

• By applying a vertical constraint.

What does a red lock icon in the browser indicate about a sketch?

• The sketch is fully defined.

• The sketch is locked for editing.

• The sketch is hidden.

• The sketch is not fully defined.

What should you do if a sketch appears fully defined but is not?

• Delete the sketch and start over.

• Ignore the issue.

• Add more dimensions.

• Check for missing constraints.

Why is it important to fully define each sketch in complex parts?

• To reduce file size.

• To maintain design intent.

• To increase rendering speed.

• To simplify the user interface.