DBC-006

Pack: G_BASELINE Severity: major

Size molded ribs and bosses from the nominal wall, not from intuition

Rule Card

Field	Value
Pack	G_BASELINE — DFM Baseline Codex
Title	Size molded ribs and bosses from the nominal wall, not from intuition
Severity	major
Check logic	Hybrid
Applies to	CAD part, CAD wall feature
Inputs required	wall_thickness_map, geometry_features
Fix template	Resize the rib or boss from the nominal wall thickness so support features add stiffness without creating sink or fill problems.

Short Description

Ribs and bosses add stiffness and support, but oversized ones create sink, poor filling, and ejection problems. Start from the nominal wall thickness and keep these features proportionate.

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
geometry_features	Geometry

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
rib_or_boss_thickness_to_wall_min	0.4
rib_or_boss_thickness_to_wall_max	0.6
rib_height_to_wall_max	3.0

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