Surface Modeling & Mesh Editing Flashcards

In Fusion 360's Form (T-Splines) environment, what happens when you 'Weld Vertices'?

Answer: Merges two nearby vertices into a single vertex

Weld Vertices merges two nearby T-Spline vertices into one, closing gaps and connecting separate mesh regions.

Which surface creation command in Fusion 360 generates a surface by sweeping a profile along a path?

Answer: Sweep

The Sweep command creates a surface by moving a profile curve along a defined path curve.

What is the effect of enabling 'Smooth' display mode versus 'Box' mode in the Form workspace?

Answer: Box mode shows the control cage; Smooth mode previews the final smoothed T-Spline surface

Box mode displays the control cage polygon mesh, while Smooth mode previews the final smooth T-Spline surface that results from subdivision.

When importing a mesh file (OBJ or STL) into Fusion 360, which workspace is used to edit the mesh directly?

Answer: Mesh

The Mesh workspace in Fusion 360 is specifically designed for importing and editing mesh bodies from OBJ, STL, and other mesh formats.

The 'Thicken' command applied to a surface body produces what type of result?

Answer: A solid body with uniform wall thickness

Thicken adds material to a surface body by offsetting it and connecting the edges, producing a solid body with the specified wall thickness.

What is a 'degenerate face' in a mesh, and why is it problematic?

Answer: A face with zero or near-zero area that can cause mesh errors and conversion failures

A degenerate face has zero or near-zero area (often caused by coincident vertices), which can cause errors during mesh-to-BRep conversion and manufacturing.

Which command in Fusion 360 allows you to create a surface through a network of intersecting curves arranged in a grid pattern?

Answer: Network Surface (Patch from curves)

A Network Surface (or network patch) creates a surface that passes through a grid network of intersecting curves in both U and V directions.