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DBC-008

Pack: G_BASELINE Severity: major

Use draft deliberately on molded pull-direction walls, ribs, and bosses

Rule Card

Field Value
Pack G_BASELINE — DFM Baseline Codex
Title Use draft deliberately on molded pull-direction walls, ribs, and bosses
Severity major
Check logic Hybrid
Applies to CAD part, CAD wall feature
Inputs required geometry_features, manual_context
Fix template Add draft in the pull direction and increase it where texture, shrink, or feature depth raises ejection friction.

Short Description

Draft lowers friction during ejection and reduces scuffing, sticking, and cycle-time penalties. Vertical molded geometry should not be left without a release strategy unless the exception is intentional.

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
geometry_features Geometry
manual_context Manual context

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
vertical_wall_draft_deg_min 0.5
rib_draft_deg_typical_min 1.0
rib_draft_deg_typical_max 1.5

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