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DBC-001

Pack: G_BASELINE Severity: major

Keep nominal wall thickness as uniform as practical and taper transitions gradually

Rule Card

Field Value
Pack G_BASELINE — DFM Baseline Codex
Title Keep nominal wall thickness as uniform as practical and taper transitions gradually
Severity major
Check logic Deterministic
Applies to CAD part, CAD wall feature
Inputs required wall_thickness_map, material_spec
Fix template Reduce abrupt thickness changes and align wall sections with cooling, shrinkage, and flow behavior.

Short Description

Uneven wall sections cool and shrink at different rates, which drives warp, residual stress, air traps, and longer cycle time. Use gradual wall transitions when thickness changes cannot be avoided.

When It Applies

This rule belongs to G_BASELINE (Shared across multiple manufacturing routes) and targets CAD part, CAD wall feature.

Evidence Profile

Input Category
wall_thickness_map Geometry
material_spec Drawing / Spec

References

Reference Type Title
REF-BOOK-DFM-SUCCESS book A Definitive Guide to Design for Manufacturing Success
REF-BOOK-DFM-INJECTION book Design for Manufacturing Analysis: Injection Molding Review Guide

Compiled Threshold Metadata

Field Value
target uniform nominal wall
amorphous_transition_change_pct_max 25
semi_crystalline_transition_change_pct_max 15

Sources

  • D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\manifest.json
  • D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\rule_library.json
  • D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\references.json
  • D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\process_classifier.json
  • D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\overlays.json
  • D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\roles.json
  • D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\report_templates.json
  • D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\ui_bindings.json