Outdoor sauna in Douglas — wood-fired system
Integrated Systems Outdoor sauna in Douglas — wood-fired system
Studio Bartholomeus — Leersum, Nederland

Design
rooted
in matter.

Furniture, objects and integrated systems — made with craftsmanship, shaped by engineering and systems thinking.

Selected work

Projects with structure and intent.

Every piece begins with a question — how can space, material and use come together more intelligently?

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Outdoor sauna in Douglas — wood-fired system
Integrated Systems 2025 Built
Outdoor sauna in Douglas — wood-fired system

Compact wood-fired sauna in Douglas and aspen — designed as a quiet space for heat and slowing down.

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The studio

Craftsmanship
meets
engineering.

Studio Bartholomeus is the work of Bas Bartholomeus — designer, maker and engineer. He designs and builds furniture, objects and integrated systems for living, working and outdoor use.

About the studio Start a conversation →
Bas Bartholomeus in de werkplaats
What I make
Interior furniture 01
Outdoor furniture 02
Integrated systems 03
Parametric design 04
Camper & boat 05
Commissions & process →
Process
01

Conversation

Short talk about project, space and budget.

02

Concept

First design with indicative price.

03

Production

Build starts after approval.

04

Delivery

Delivered and installed.

Journal

Notes on making
and thinking.

All notes →
Materials · March 2026
Material is never neutral — on oak, oil and patina

Why the choice of finish is as defining as the form — and how material communicates the expected lifespan of an object.

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Process · February 2026
Designing for clarity at the desk

A look at cable management, modularity and why visual quiet matters.

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Studio · March 2026
Systems thinking in furniture — why a cabinet is more than storage

How the discipline of digital systems applies to physical space — and why that fundamentally changes furniture design.

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Want something made?

The studio takes a limited number of commissions each year.

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