CADDi

Design Review

Rule Library

The catalog of design rules the checker enforces, grouped by category with a severity for each. These are generic, vendor-neutral drawing-quality and completeness checks.

24

Total rules

4

Critical

11

Major

9

Minor

Title Block

  • TB-NUM

    Drawing number present

    The title block must contain a unique drawing/part number.

    Critical
  • TB-REV

    Revision level recorded

    A revision letter/number and date must be recorded in the title block.

    Major
  • TB-SCALE

    Drawing scale stated

    The drawing scale (e.g. 1:1, 1:2) must be stated in the title block.

    Minor
  • TB-UNIT

    Units of measurement specified

    Units (mm or in) must be declared so dimensions are unambiguous.

    Major

Dimensioning

  • DIM-FULL

    All features fully dimensioned

    Every manufacturable feature must be dimensioned; no missing sizes.

    Critical
  • DIM-DUP

    No duplicate or over-dimensioning

    A feature must not be dimensioned twice with conflicting values.

    Major
  • DIM-DATUM

    Dimensions reference a clear datum

    Dimensions should originate from a consistent datum, not chain-stacked.

    Major
  • DIM-ENV

    Overall envelope dimensions present

    Overall length/width/height envelope dimensions must be shown.

    Minor

Tolerancing

  • TOL-GEN

    General tolerance note present

    A general tolerance note (e.g. ISO 2768-m) must cover untoleranced dims.

    Critical
  • TOL-CRIT

    Critical dimensions individually toleranced

    Fit/mating dimensions must carry explicit tolerances, not just general.

    Major
  • TOL-STACK

    Tolerance stack-up within feasible range

    Chained tolerances must not accumulate beyond a manufacturable band.

    Major

GD&T

  • GDT-DATUM

    Datum features identified

    Datum reference features (A/B/C) must be defined where GD&T is used.

    Major
  • GDT-FCF

    Feature control frames complete

    Each control frame must specify symbol, tolerance value, and datums.

    Major

Holes & Threads

  • HOLE-DIA

    Hole callouts specify diameter and depth

    Every hole callout must give a diameter and a depth (or THRU).

    Major
  • HOLE-THD

    Threaded holes specify thread designation

    Tapped holes must carry a thread designation (e.g. M6×1.0, depth).

    Major
  • HOLE-CBORE

    Counterbore / countersink fully specified

    Counterbore/countersink callouts must give diameter and depth/angle.

    Minor

Material & Finish

  • MAT-SPEC

    Material specification present

    The part material (grade/standard) must be specified on the drawing.

    Critical
  • MAT-FIN

    Surface finish (roughness) specified

    Functional surfaces must carry a surface-roughness callout (e.g. Ra).

    Major
  • MAT-HT

    Heat treatment / coating noted where required

    Where the design implies it, heat treatment or coating must be noted.

    Minor

Features & Standards

  • STD-EDGE

    Sharp edges have chamfer or break callout

    Exposed sharp edges should carry a chamfer or edge-break note.

    Minor
  • STD-FILLET

    Internal corners specify fillet radius

    Internal corners must specify a fillet radius for machinability.

    Minor
  • STD-DRAFT

    Draft angle specified on cast/molded features

    Cast or molded walls should specify a draft angle where applicable.

    Minor

Views & Annotations

  • VIEW-LBL

    Section and detail views are labeled

    Section/detail views must be labeled and cross-referenced (A-A, etc.).

    Minor
  • VIEW-PROJ

    Projection method symbol present

    The first/third-angle projection symbol must appear on the sheet.

    Minor