Oskar is born in Banff, Canada.
Sophie is born in ‘s-Hertogenbosch, the Netherlands

OS ∆ OOS
OS ∆ OOS is the Eindhoven-based design studio of Oskar Peet and Sophie Mensen, whose practice spans collectible furniture, lighting, objects, and interiors. Guided by concept and material exploration, the duo creates sculptural works that balance experimentation, functionality, and refined craftsmanship. Combining industrial production with traditional handcraft, OS ∆ OOS develops objects that celebrate innovation, materiality, and timeless design. Their work reflects a thoughtful dialogue between form, process, and everyday use.
Interview
S: When I go back to my earliest memory, I remember that I was very impressed by the work of Brancusi in his reconstructed atelier next to the Centre Pompidou in Paris. Since I was little, I have been visiting loads of museums, cathedrals, and other historical architecturally important buildings with my family.
S: Yes.
S: I was always very inspired by art, any kind of art and material, from painting to sculptural arts, and felt the desire to work in this field. But I knew that there was no pure artist in me who could solely create purely artistic expressions; I needed to have boundaries, restrictions, and somehow a reason to make an object. I wanted to create something that had a reference to the human body and had a (somewhat practical) function was more logical to me. That made me decide to study at the Design Academy Eindhoven instead of an Art School.
The creative process itself usually goes the same way with every piece; sometimes it is faster than other times, depending on the starting point of the project. Usually we start working on the concept, and Oskar and I question each other a lot, which helps us to create a clear starting point. Alongside, we start sketching or researching a technique or material that we are fascinated by. Since most of our objects are not entirely made inside our own studio, we try to get in touch with a company that can produce the object or part of the object we have in mind. Production techniques and possibilities can influence the design since we often ask companies to do something that they normally don’t do, and most of the times and interesting collaboration starts.
What we like most is that no day is the same. We can play with colours all day for a new interior project or sit behind the computer drawing new ideas from sketches into 3d and the other day we are on the road visiting manufacturing companies, or we are busy with the production of orders in our workshop… so it is very diverse 😉
Our curiosity drives us to a lot of different materials. Either the material properties or possible techniques that can be applied to the material or visual characteristics. This leads to a lot of different objects made from marble, aluminium, glass, steel, textiles, etc.
The objects are often partly industrially fabricated, combined with craftsmanship and handwork.
Contemporary design.
Not directly a typical designer or person. Perhaps our teachers and education have influenced the way we work the most.
Dieter Rahms, Hella Jongerius, Bourroullec, Aldo Bakker, Ettore Sottsass.
James Turrell, Gerhard Richter, Richard Serra, Olafur Elliason, Gerrit Rietveld, Anish Kapoor.
Monumental.
“I needed to have boundaries, restrictions, and somehow a reason to make an object.”
The Questions
(The Proust Questionnaire is a set of questions answered by the French writer Marcel Proust.
Other historical figures who have answered confession albums are Oscar Wilde,
Karl Marx, Arthur Conan Doyle, Stéphane Mallarmé, Paul Cézanne…)
A moment free of obligations while being and enjoying a very green and sunny environment.
Being buried alive.
Procrastination
To treat others with disrespect.
People driven to do something good with their lives.
Red wine.
Distracted.
Holiness.
Adventurous.
Warmth.
‘Ja’ which means yes in Dutch.
Patience.
Be more decisive.
Carving out a career of what I love to do.
A bird, and see the environment from a birds perspective.
A place where I wake up in the morning and directly enjoy a beautiful view.
My health.
Living in fear.
Enjoying a glass of red wine at the end of the day while reflecting upon all the things that happened that day.
Being impatient.
Laughing and crying together. Sharing the good and the more difficult times together.
Hanya Yanagihara, Griet op de Beeck.
Don’t know.
Really no idea. History interests me but never thought about identifying myself with a historical figure.
I do not have a heroes.
Sophia.
Being impatient.
Having regrets.
In my sleep.
Live in the moment, at least try to ;)
“Production techniques and possibilities can influence the design, since we often ask companies to do something that they normally don’t do.”
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