Surface Modeling & Mesh Editing Flashcards
7 cards from real ACE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Surface Modeling & Mesh Editing flashcards as text
What is the purpose of the 'Crease' command in Fusion 360's Form (T-Splines) environment?
Answer: Creates a sharp, non-smooth edge in the T-Spline surface along selected edges
The Crease command marks selected edges as sharp so the T-Spline smoothing algorithm does not round them, creating hard edges in the final surface.
Which Fusion 360 command creates a surface by revolving a profile curve around an axis?
Answer: Revolve
The Revolve command rotates a profile curve around a specified axis by a defined angle to generate a surface or solid of revolution.
When you use 'Offset Surface' in Fusion 360, what potential issue can arise with highly curved surfaces?
Answer: Self-intersections or collapsed geometry can occur if the offset distance exceeds local radius of curvature
Offsetting a surface by a distance greater than its local minimum radius of curvature causes self-intersections, producing invalid geometry.
In the Mesh workspace, what does 'Remesh' do to an imported mesh?
Answer: Reconstructs the mesh with a more uniform distribution of triangles
Remesh regenerates the mesh with a more uniform triangle distribution and target edge length, improving mesh quality for downstream operations.
What role does the 'Trim' command play in surface modeling workflows in Fusion 360?
Answer: Cuts away unwanted portions of a surface using another surface or sketch as a cutting tool
Trim cuts away portions of a surface that extend beyond an intersecting surface or sketch boundary, cleaning up raw surface geometry.
What is the significance of a 'watertight' or 'closed' mesh when preparing geometry for 3D printing?
Answer: It means every edge is shared by exactly two faces with no holes or open boundaries
A watertight mesh has no open edges or holes — every edge is shared by exactly two faces — which is required by slicing software to compute a printable volume.
When using the 'Scale' command in the Mesh workspace to resize a mesh body, what must you consider for dimensional accuracy in manufacturing?
Answer: The scale factor must be applied uniformly or anisotropically depending on the required dimensions
You must choose between uniform scaling (same factor in all axes) or non-uniform scaling (different factors per axis) depending on whether the design requires proportional or directional dimensional changes.