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I build software for physical execution

Geometry pipelines, fabrication automation, configurators, and field verification tools. I turn design intent and as-built reality into decisions crews and machines can act on.

I call these calibrated instruments for physical work. Each turns messy field reality into an executable, verifiable decision.

SIGNAL
As-Built Scan
OUTPUT
Directive Card
VERIFICATION
PASS/FAIL

The hardest part of installing complex assemblies isn’t detecting that something is off. It’s expressing the correction in a format that’s unambiguous, constrained by what’s allowed, and verifiable after adjustment.


Flagship Instrument

CALIBRATED

Directive Engine

Convert nominal ↔ as-built deltas into installer-ready directive cards (move / rotate / index), with 3D visualization and verification loops.

The geometry-to-directive loop is substrate-agnostic. The same spine retargets from architectural installation to manufacturing and aerospace assembly, anywhere a built part has to match its model.

Open Live Demo Case Study →

Instruments I Build

Directive Generation

CONSTRAINED TOLERANCED

Actionable correction steps with DOF constraints and tolerance bounds.

3D Visualization

BROWSER-FIRST LEGIBLE

Web-based viewers that make adjustments auditable and field-ready.

Verification Loops

PASS FAIL

Before/after deviation checks so teams close the gap with confidence.

SurveyLink

PEER-REVIEWED METROLOGY

Streams total-station data to a web app for real-time field verification and as-built reconciliation. Deployed on-site; peer-reviewed (Taylor & Francis, 2022).

Paper →

passthrough

VALIDATED OPEN SOURCE

A reverse-problem instrument: carries a morphed mesh back to an analytic CAD surface, isolating parameterization recovery from representation richness. 123 passing tests, public.

Repository → Case Study →

Customer-facing Design Platforms

MODA

3D selection and quote-entry instruments that turn customer intent into spec-ready configurations without handoffs. Built to collapse the gap from “I want this” to “here’s the exact build + price.”

Case Study →

Fabricator API / Feasibility Bumpers

GRASSHOPPER

Fabrication-aware bumpers embedded in the designer workflow, flagging infeasible geometry and rerouting choices before downstream rework. Keeps exploration open while enforcing what can actually be built.

Case Study →

Calibration Background

Field-tested at Zahner. Built geometry pipelines, deviation analysis, and installer-facing interfaces for complex metal fabrication and installation. Deployed where RMS < 5mm matters.

See all instruments → · About my approach →


Get in Touch

barnes.ngb@gmail.com LinkedIn GitHub