CAD Workflow: From Constrained Sketch to Reliable 3D Model

Practical workflow

1. Start on the plane or face that best represents the part's primary design intent.
2. Constrain geometry deliberately; avoid both under-constrained sketches and unnecessary constraint complexity.
3. Use named or memorable driving dimensions for critical sizes.
4. Build major form first, then add secondary cuts, holes, fillets and chamfers.
5. Change an early driving dimension as a test: downstream geometry should rebuild predictably.
6. Keep manufacturability in mind before adding cosmetic detail.

Use the guide as a starting point

Machine, material, software and manufacturer requirements vary. Keep a controlled test record and use the current documentation for your exact equipment and process.