forgecad-lld

Construction-accurate CAD documentation requires a Low-Level Design (LLD) that specifies exact dimensions, constraints, parameters, and verification criteria, serving as the single source of truth for model implementation. Explicit units and rationales eliminate ambiguity.

A CAD Low-Level Design document is a precise build specification that defines exact dimensions, constraints, parameters, and verification criteria. It translates high-level design intent into an authoritative, buildable construction document without ambiguity.

Locking down CAD design constraints and parameters involves generating an LLD document that captures the exact narrative, dimensional constraints, and functional verification checklist based on already-approved High-Level Design decisions.

An approved High-Level Design is required before generating a CAD build spec LLD to ensure decision-to-implementation fidelity. Alternatively, for simple parts, you can generate the LLD directly without prior HLD decisions.

Defining dimensional verification criteria requires creating a verification-first LLD checklist that validates exact dimensions and functional checks, ensuring the resulting CAD model can be reviewed and validated against the build spec.

The best way to document CAD design decisions for validation is producing a verification-first LLD document that locks parameters and constraints, ensuring every filled decision from a prior HLD is implemented rather than re-decided during construction.