CSWP Surface Modeling 3 — Questions and Answers
Question 1: Which surface continuity type ensures that both the tangent direction AND the rate of curvature change match across a boundary?
- G0 (Positional)
- G1 (Tangent)
- G2 (Curvature) (Correct answer)
- G3 (Acceleration)
Correct answer: G2 (Curvature)
G2 curvature continuity means both the tangent vectors and curvature magnitudes match at the shared boundary.
Question 2: When would you use 'Extend Surface' instead of 'Offset Surface' in SOLIDWORKS?
- When you need a parallel copy of the surface at a fixed distance
- When you need to lengthen the surface by continuing its existing geometry from an edge (Correct answer)
- When you need to reverse the surface normal direction
- When you need to merge two separate surfaces
Correct answer: When you need to lengthen the surface by continuing its existing geometry from an edge
Extend Surface grows the surface outward from a selected edge by continuing the existing surface shape.
Question 3: Which PropertyManager option in the Sweep Surface allows the profile to rotate as it follows a curved path?
- Follow Path
- Keep Normal Constant
- Twist Along Path (Correct answer)
- Align With End Faces
Correct answer: Twist Along Path
Twist Along Path causes the profile to rotate by a specified amount as it traverses the sweep path.
Question 4: If a Knit Surface operation fails with an error about 'open edges,' what is the most likely cause?
- The surface has too many faces
- There are gaps between adjacent surfaces larger than the knit tolerance (Correct answer)
- The surfaces are on different layers
- The surface normals are not all pointing outward
Correct answer: There are gaps between adjacent surfaces larger than the knit tolerance
Knit requires adjacent edges to be within the tolerance gap for the surfaces to be joined into a single body.
Question 5: In the context of SOLIDWORKS surface modeling, what does 'Ruled Surface' create?
- A surface formed by straight lines connecting two edge curves (Correct answer)
- A surface that follows a set of construction lines
- A planar surface bounded by a closed sketch
- A developable surface that can be unrolled flat
Correct answer: A surface formed by straight lines connecting two edge curves
Ruled Surface generates geometry by drawing straight line segments between corresponding points on two edge curves.
Question 6: What does the 'Reverse Normals' option accomplish when creating a surface body in SOLIDWORKS?
- Flips the surface so the inside face becomes the outside face
- Reverses the direction the Thicken feature adds material (Correct answer)
- Changes the UV parameter orientation
- Mirrors the surface about the origin plane
Correct answer: Reverses the direction the Thicken feature adds material
Reversing normals before Thicken controls which side of the surface the solid material is added to.
Question 7: Which SOLIDWORKS analysis tool displays a color map indicating how much a surface deviates from a perfect sphere or cylinder?
- Zebra Stripes
- Curvature Display (Correct answer)
- Draft Analysis
- Deviation Analysis
Correct answer: Curvature Display
Curvature Display uses a color gradient to visualize the Gaussian or mean curvature across the surface.
CSWP Surface Modeling 3
Which surface continuity type ensures that both the tangent direction AND the rate of curvature change match across a boundary?