ACE Surface Modeling & Mesh Editing 2 — Questions and Answers
Question 1: Which Autodesk tool converts a T-Spline body into a BRep (boundary representation) solid or surface?
- Convert command in the Surface tab (Correct answer)
- Thicken command
- Sculpt workspace Convert button
- Stitch command
Correct answer: Convert command in the Surface tab
The Convert command in the Surface tab converts a T-Spline body to a BRep solid or surface for use with traditional modeling tools.
Question 2: When editing a mesh body in Fusion 360, what does the 'Reduce' command accomplish?
- Increases polygon count for smoother surfaces
- Decreases polygon count while preserving overall shape (Correct answer)
- Splits mesh faces into triangles
- Merges overlapping mesh vertices
Correct answer: Decreases polygon count while preserving overall shape
The Reduce command decreases the polygon count of a mesh body while attempting to preserve the overall shape and silhouette.
Question 3: In surface modeling, what is the purpose of a 'Patch' surface?
- To add thickness to an open surface
- To fill a hole or gap in an existing surface (Correct answer)
- To mirror a surface across a plane
- To offset a surface by a uniform distance
Correct answer: To fill a hole or gap in an existing surface
The Patch command fills holes or gaps in surfaces, creating a new surface that closes the open boundary.
Question 4: What continuity condition ensures that two surfaces share the same tangent plane along their shared edge?
- G0 (Positional)
- G1 (Tangent) (Correct answer)
- G2 (Curvature)
- G3 (Acceleration)
Correct answer: G1 (Tangent)
G1 tangent continuity means two surfaces meet and share the same tangent plane, eliminating visible crease but not necessarily matching curvature.
Question 5: Which mesh editing operation in Fusion 360 allows you to push and pull mesh faces directly in the Mesh workspace?
- Edit Form (Correct answer)
- Direct Edit
- Sculpt
- Deform
Correct answer: Edit Form
Edit Form in the Mesh workspace lets you directly push, pull, and manipulate mesh faces, edges, and vertices.
Question 6: When creating a surface with the 'Loft' command using guide rails, what is the primary function of the rail curves?
- Define the cross-sectional profiles
- Control the direction and shape between profiles (Correct answer)
- Set the thickness of the resulting surface
- Determine the surface's UV parameter direction
Correct answer: Control the direction and shape between profiles
Rail curves in a Loft guide the shape and direction of the surface as it transitions between the cross-sectional profile curves.
Question 7: What does the 'Unstitch' command do to a stitched surface body?
- Deletes individual surface faces
- Separates stitched surfaces back into individual face bodies (Correct answer)
- Converts the surface body to a solid
- Mirrors the surface about its center plane
Correct answer: Separates stitched surfaces back into individual face bodies
Unstitch separates a stitched quilt (surface body) back into its individual constituent surface faces.
ACE Surface Modeling & Mesh Editing 2
Which Autodesk tool converts a T-Spline body into a BRep (boundary representation) solid or surface?