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IfcOpenShell (IfcOpenShell)MCADConfidence: Medium

When a Blender mesh gets an IFC class, Bonsai stores it as tessellation even when it is a plain prism. The reporter's trench ring removed 0 m3 from the terrain, but after converting it by hand to an extrusion the same ring removed 47.76 m3.

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
IfcOpenShell/IfcOpenShell Issue #10082: Bonsai: prefer parametric extrusion over tessellation when an extrudable mesh gets an IFC class
github.com
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Analyst Notes

From the Grok pain-radar digests, Oct 28-29 2026 (Oct 28 8:41 AM ET through Oct 29 early-morning Haitch editions). Verified live 2026-10-29: issue/PR read; title and state confirmed.