OCCT (Open-Cascade-SAS)MCADConfidence: Medium

STEP export writes material density as g^3 cm^2 with an untyped value. OCCT's reader ignores the exponents, so OCCT round-trips with itself fine, and other readers reject or misread the file.

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

Open-Cascade-SAS/OCCT Issue #1690: STEP export: material density written with wrong unit exponents (g³·cm²) and an untyped value

github.com

→

Analyst Notes

From the Grok pain-radar digests, Oct 31-Nov 1 2026 (Oct 31 9:41 PM ET through Nov 1 7:41 AM ET digests plus the Haitch overnight edition). Verified live 2026-11-01: issue/PR read; title and state confirmed.