cad-agent (Valpatel)MCADConfidence: Medium

The 3MF writer stamps zip entries with the write time, so rebuilding unchanged geometry yields different bytes, and the slice report keyed on sha256 marks every rebuild stale, so the whole set has to be sliced again.

Impact Analysis

Persona

Mechanical Designer

Team Size Impact

5x Multiplier

Prototype Delay

3 Days

Est. Annual Cost

$30,000

1 user · 1 month240 min
Rest of team960 min
Rest of year13,200 min

monthly_minutes × 12 × team_multiplier ÷ 60 × $75/hr = $30k/yr

$75/hr assumed rate.

Annual team-minutes decomposed from the reported monthly inputs.

Evidence & Sources

1 Sources

Valpatel/cad-agent Issue #48: 3MF export is not reproducible: zip entries carry the write time, so every rebuild invalidates the slice report

github.com

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Analyst Notes

From the Grok pain-radar digests, Oct 27-28 2026 (Oct 27 8:41 AM ET through Oct 28 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-28: issue/PR/thread read; title and state confirmed.