CAD review overview

caddiff helps engineering teams compare drawing revisions, inspect changes, and record review decisions. This field guide covers drawing preparation, supported formats, comparison sheets, and engineering sign-off.

Start with a reliable comparison

Confirm the part or drawing identity, revision order, units, scale, and sheet sequence before interpreting any differences. A useful comparison separates intentional engineering changes from differences caused by export settings or coordinate shifts.

Technical guides

• Drawing preparation: check units, coordinates, layers, and sheet identity.
• Getting started: select the baseline and revised drawings.
• Supported drawings and limits: choose DXF or vector PDF and understand limitations.
• Comparison sheets: explore the mounting bracket example and download its revisions.
• Review workflow: inspect changes, discuss issues, and record sign-off.
• Engineering review checklist: check dimensions, tolerances, geometry, and notes.
• Drawing data and access: understand how drawing information is handled and shared.
• Use cases: apply the workflow to mechanical, supplier, and plan reviews.

Engineering judgment

A detected difference identifies a change to investigate. Review the source drawings, confirm design intent, and assess fit, function, and manufacturing implications before approval. AI analysis supports that assessment but does not replace it.