Nicolas Rohart
SHEET 01
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Une intervention en forêt ? Exploitation forestière
Sur un arbre près de chez vous ? Abattages complexes
Forestry — Design — Robotics — Construction

From standing tree
to finished structure.

I operate across the entire timber value chain myself — forest management and harvesting, computational design, robotic shaping of curved timber, and on-site construction — including the digital workflows that connect each stage.

BASELimousin, France
EXPERIENCE16 years, full chain
LOOKING FORR&D partnership abroad
OPEN TOWorldwide

Most people in this field work one stage of the chain — the forest, the design, or the robotics. I learned forestry by living in the forest, design by modeling in Rhino, and robotics alongside an expert. Today I generate a KUKA arm's cutting trajectory directly from the scanned geometry, so it follows the natural shape of a tree I felled myself. I actually run the entire construction chain, on the same projects, for real clients.

The Chain

Five stages, one hand throughout

Each stage below feeds the next — a tree felled in stage two becomes a robot toolpath in stage four, and a client's home in stage five stands in the same landscape assessed in stage one.

01
Forest & Silviculture

Managing forest for the world it becomes

I work independently, across the whole process — forest management, felling, every stage of timber transformation, and sale. The goal is not short-term extraction, but ensuring that forests remain living, resilient ecosystems capable of supporting future generations despite existential obstacles: climate change, increasing human pressure, and the persistent belief that incremental adjustments will be enough.

Beyond declared certification schemes, my team developed Bois Suivis — literally, "tracked timber" — a field-verification protocol that lets a wood's end user check, on the ground, that stated forestry practices were actually followed. It's built to be checked, not just declared: a concrete proposal for keeping this world habitable for the people who'll live in it after us.

Tracked timber — in one line A traceable, on-site-verifiable set of forestry commitments, designed to go beyond label compliance — a forestry project anyone can understand and recognize.
Nicolas Rohart assessing a beech stand in the forest, canopy detail
02
Harvest & Extraction

Felling and skidding, hands-on

I fell and extract the timber myself — it keeps me in direct feedback with the rest of the chain. What a tree does in the forest, on the workshop floor, and on a real construction site all shape each other, within the same workflow — not just on paper.

Twelve years ago, I built my own skidding vehicle from a repurposed 4x4 fire-service truck chassis — new bodywork, crane installation, structural welding and calculations, taken through individual type-approval for road use. This original forestry machine lets me control the quality of the work on site directly, and adapt harvesting methods to each site's conditions.

KUKA robotic arm sawing a curved log, close-up
03
Design

Round, curved timber structures, drawn to fit the site

I design custom timber buildings from real trunks — round, naturally curved — fitted to each client's brief and often to an existing building I need to design around. Robotic shaping (stage four) makes this kind of natural, non-standard geometry buildable at a fraction of the previous cost.

I draw in Rhino 3D, then bring the proposal to life in TwinMotion — compositing the new structure into a photogrammetry scan of the existing site — for near-photorealistic renders that clients can already picture themselves in. It materially shortens the distance between a proposal and a signed quote.

Photorealistic render of a stone building (mairie) with an integrated solar carport, existing site
04
Robotic Shaping

Toolpaths that follow the tree, not the other way around

In collaboration with my mentor Ludovic Mallegol, I develop parametric workflows that generate cutting toolpaths for a seven-axis robot. The work is carried out at La Manufacture du Châtaignier — the wood fabrication workshop of Coop Monts et Barrages, an emerging innovation cluster based on a working farm.

The aim: let the robot adapt to the tree's actual curvature, rather than forcing the natural shape into a standard, rectilinear beam — carrying forward the genius of the living world. After two years of development, we're beginning to publish our results: "The tree dictates the shape: reversing the industrial paradigm in rural areas", in Construction Robotics (Springer).
And production is under way :

KUKA robotic arm cutting a curved log with a chainsaw attachment in the workshop
Custom 3D scanner A 3m trunk becomes a 600,000-point cloud in 3.5 minutes — fast enough for continuous production, with no downtime reloading the timber.
Raw felled logs stacked in the workshop before robotic shaping
Close-up of the robot arm shaping a log with a chainsaw attachment
Finished wood-framed structure, assembled and standing on site
05
On-Site Building

From foundation to finished frame

I install the finished structures myself on client sites — from site preparation and foundations to the final timber frame assembly — combining traditional timber craftsmanship with the precision of robotic fabrication. Trees can remain standing for decades, sometimes centuries — the very same level of structural stability we expect from a building. They are, in fact, a powerful source of inspiration.

Wood-framed pergola built onto a traditional stone house
Technical Profile

At a glance

Forestry
  • Forest assessment
  • Silviculture
  • Timber harvesting
  • Complex felling
Digital Fabrication
  • Parametric design → toolpath(Rhino / Grasshopper / KukaPRC)
  • Commercial renders(MeshRoom / TwinMotion)
Construction
  • Design
  • Robot operation
  • Site implementation
  • Project management
Research & Recognition

Where this work sits in the field

This is a small, fast-moving international research area. Here's where we fit in it.

Publication

"The tree dictates the shape: reversing the industrial paradigm in rural areas"

Peer-reviewed article, Construction Robotics (Springer), on scan-to-trajectory robotic shaping of natural curved timber.

Aug 2026

ROB|ARCH-adjacent workshop, Aarhus School of Architecture

Presenting our workflow alongside the CITA – Aarhus University – SDU Odense research network working on robotic free-form timber fabrication.

What I'm looking for

A research team, studio, or workshop working on wood, robotics, or both.

16 years running the full chain — forest to finished structure — with the software skills (Rhino, Grasshopper, KukaPRC) to bring that hands-on knowledge into a lab or production environment as a developer or trainer. Based in France, open to relocating.

Robotic fabrication Timber engineering Grasshopper / KukaPRC Forestry & silviculture Technical training
FR — section foresterie appliquée
Activité locale — Limousin

Exploitation forestière

Gestion, sylviculture, et coupes en Creuse (23), Corrèze (19) et Haute-Vienne (87).

  • Approche sylvicole innovante
  • Maîtrise d'exploitation, travaux sur mesure
  • Documents de suivi
  • Partenariat avec les associations locales engagées
  • Pépinière d'enrichissement dédiée
Recrutement Je recherche actuellement un charpentier qualifié à embaucher pour rejoindre l'activité. Contactez-moi directement via les coordonnées en bas de page.
Grue forestière chargeant des grumes en forêt, Limousin
Activité locale — Limousin

Abattages complexes, proximité d'habitations

Abattage d'arbres difficiles ou dangereux à proximité immédiate de bâtiments, réseaux ou zones à risque — interventions techniques maîtrisées.

  • Abattage en traction par un engin lourd
  • Démontage par pièces si nécessaire (nacelle)
  • Évacuation au choix
  • Assurance spécifique et renforcée
Confiance 100% d'engagement, 0% d'accident, 10 ans de satisfaction clients.
Contact direct : 07 68 67 95 55