Parametric CAD & 3D Modeling
Precision parametric CAD services — from concept modeling and legacy drawing conversion to simulation-ready geometry preparation.
Overview
Our CAD practice is the geometric backbone of every simulation engagement. We deliver production-quality SolidWorks models with full parametric design intent, preparing geometry that feeds directly into FEA and CFD workflows without manual rework.
Capabilities
- Legacy products exist only as 2D drawings or physical samples with no digital CAD model
- CAD models from design teams contain features that cause meshing failures in FEA/CFD
- No parametric design intent — geometry changes require manual rebuild rather than parameter updates
- Multi-CAD environments create translation errors when importing STEP/IGES files
- Full parametric 3D modeling from 2D drawings, sketches, or reverse-engineered scan data
- Geometry cleanup and defeaturing for simulation-ready mesh generation
- Mid-surface extraction from solid bodies for shell-element FEA modeling
- Design table-driven configurations for parametric variant generation
- Requirements review: understand downstream use case (manufacturing drawing, FEA prep, CFD domain, or visualization)
- Modeling strategy: define feature tree structure, datum planes, and design intent for parametric flexibility
- Modeling execution: build fully constrained SolidWorks parts and assemblies following best-practice feature sequencing
- Simulation preparation: defeature, extract mid-surfaces, create named selections, and export in target format (Parasolid, STEP, native .sldprt)
- Quality check: verify model integrity with SolidWorks Geometry Analysis and confirm mesh compatibility with target solver
- Native SolidWorks part (.sldprt) and assembly (.sldasm) files with full parametric history
- GD&T-compliant 2D manufacturing drawings (.slddrw) where required
- Defeatured and mid-surfaced geometry ready for FEA import
- Fluid volume extraction for CFD domain definition
- Design table spreadsheet for parametric configuration management
Expected Outcomes
- Simulation-ready geometry delivered in hours rather than days of manual cleanup
- Parametric models enabling rapid design variant exploration without rebuild
- Digital archival of legacy products as fully associative 3D CAD with manufacturing drawings
- Consistent CAD quality standard across multi-engineer project teams
Why Shirsh
CAD quality determines simulation quality. Our modelers are trained not just in SolidWorks operations, but in the downstream requirements of FEA meshing and CFD domain extraction. Every model we deliver is built with simulation intent — clean topology, named selections, and appropriate defeaturing — eliminating the geometry cleanup bottleneck that plagues most analysis projects.
Related Insights
Articles and analysis related to this solution.
Ready to Solve This Challenge?
Tell us about your engineering problem — our team will propose a strategy tailored to your requirements.