The author opened 22 STEP files from other CAD systems and compared volumes with OpenCASCADE. SolidWorks' Foot.STEP came in 304.8 times too big because the product name Foot matched the FOOT unit, NIST mm parts with inch PMI came in 25.4 times too big, and all 9 NIST AP242 parts with PMI failed as not a STEP file. The neutral format that is supposed to move geometry between tools still loses units and shape.
Recurring agent failure issue in 3bcad (Three-Bugs-Studio)
What engineers report
A recurring agent failure problem in 3bcad (Three-Bugs-Studio) that mostly hits the mechanical designer.
Failure pattern: validation / geometry
Analyst note
From the Grok pain-radar digests, Nov 9-10 2026 (Nov 9 7:41 AM ET through Nov 10 7:41 AM ET digests plus the Haitch editions). Verified live 2026-11-10: issue/PR read; title and state confirmed.
What it costs a team
Modeled annual cost
$30,000
For a team of 5
Prototype delay
3 days
Modeled schedule slip per occurrence
Time lost
240 min
Per engineer per month, about 1 incidents
How the cost is modeled
240 min/month × 5 engineers × 12 months = 240 hours × $125/hour = $30,000
A modeled estimate with medium confidence. Swap in your own team size and loaded rate to size it for your team.
Engineering tools that address it
No engineering tool profile lists this error yet. Browse tools that connect to 3bcad (Three-Bugs-Studio).
Evidence
Sourced from public community reports. Costs and delays are modeled estimates, not measurements. Know a better source or a fix? Tell us at hello@productflo.io.