Solidworks Additive Manufacturing and 3D Print Preparation — Questions and Answers
Question 1: In SolidWorks Print3D, which factor most directly determines how much support material a printed part will require?
- The number of configurations in the part file
- The build orientation and the overhang angle threshold (Correct answer)
- The material appearance assigned in the Appearance Manager
- The number of bodies in a multibody part
Correct answer: The build orientation and the overhang angle threshold
Build orientation determines which faces are overhanging relative to the print bed. Combined with the printer's overhang angle threshold (typically 45–50°), this defines which areas require support structures. Rotating the part can dramatically reduce support material and print time.
Question 2: Which file format is the original industry-standard output from SolidWorks for sharing a 3D model with most FDM, SLA, and SLS printers?
- .STEP (ISO 10303)
- .STL (stereolithography) (Correct answer)
- .DXF (Drawing Exchange Format)
- .IGES (Initial Graphics Exchange Specification)
Correct answer: .STL (stereolithography)
STL (Standard Tessellation Language / Stereolithography) is the original and still most widely supported format for 3D printing. SolidWorks exports STL by tessellating curved surfaces into triangular facets that slicing software can process.
Question 3: When exporting an STL from SolidWorks, what do the 'Resolution' or 'Deviation/Angle' settings control?
- The number of print layers the slicer will generate
- The coarseness or fineness of the triangular mesh that approximates curved surfaces (Correct answer)
- The wall thickness of hollow infill regions
- The coordinate system origin used by the printer
Correct answer: The coarseness or fineness of the triangular mesh that approximates curved surfaces
STL files represent curved geometry using triangular facets. Tighter deviation and angle tolerances produce smaller triangles that better approximate curves, resulting in a smoother printed surface but a larger file size.
Question 4: The 3MF file format, supported in SolidWorks Print3D, offers which key advantage over STL for 3D printing workflows?
- It compresses the model to under 1 KB for fast network transfer
- It embeds color, material, texture, and print settings data alongside geometry (Correct answer)
- It is the only format compatible with metal powder-bed fusion printers
- It stores the model as NURBS curves rather than facets, preserving exact curvature
Correct answer: It embeds color, material, texture, and print settings data alongside geometry
3MF (3D Manufacturing Format) was designed to replace STL by including not just geometry (as triangular facets) but also color, material properties, texture maps, print settings, and support information in a single file — making it far richer for full-color and multi-material printing.
Question 5: In SolidWorks Print3D, what does the 'Wall Thickness Analysis' (or the similar check in the Geometry Analysis tool) help a designer identify?
- Areas where the model wall is too thin to be reliably printed with the chosen process and material (Correct answer)
- Surfaces that require a fillet to pass simulation boundary conditions
- Interference between bodies in a multibody part before assembly
- Draft angle violations that would trap the part in a mold
Correct answer: Areas where the model wall is too thin to be reliably printed with the chosen process and material
Wall Thickness Analysis highlights regions of the model that fall below the minimum printable thickness for the selected process (e.g., FDM nozzle diameter, SLA curing resolution). Thin walls may not form properly or may be structurally too weak after printing.
Question 6: Which SolidWorks tool allows you to preview how a part will be oriented on the print bed, shows color-coded overhang regions, and lets you export directly to a printer or slicing software?
- Simulation Advisor
- DFMXpress
- Print3D (Correct answer)
- Tolerance Analysis
Correct answer: Print3D
Print3D is SolidWorks' built-in additive manufacturing preparation tool. It provides bed orientation controls, color-coded overhang and wall-thickness visualization, printer connection options, and direct STL/3MF export — all in one workflow.
Solidworks Additive Manufacturing and 3D Print Preparation
In SolidWorks Print3D, which factor most directly determines how much support material a printed part will require?