OS & OOS moulds synthetic stone to create Arc seating collection
Milan 2015: Dutch design duo Oskar Peet and Sophie Mensen have created a bench and two stools from synthetic stone that becomes malleable when heated (+ slideshow).
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_3.jpg)
The Arc furniture is made from a series of surfaces that look like they have been carved from black granite.
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_10.jpg)
OS & OOS used Hi-Macs – a non-porous blend of stone-based material and acrylic – to form the shapes of the seats.
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_4.jpg)
"Naturally formed stone is not malleable or pourable so only through the removal of material one can create forms," said the designers.
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_17.jpg)
"The use of Hi-Macs material allows for the same properties of stone because it is just that, but then ground with a binding medium that makes it possible to be bent when warm and therefore able to do things natural stone cannot," they explained.
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_21.jpg)
The Arc bench and stools are based on two common radiuses, with interchangeable parts leading to the different designs.
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_18.jpg)
Thin, curved sections of the material are stood upright to form legs, with horizontal surfaces in between to create seats either in one continuous piece or as a separate element.
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_2.jpg)
"An arc is a self-supporting element and therefore is inherently stable," said the designers. "The Arc bench and stools make good use of this trait which allows for the simple and slender shapes."
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_1.jpg)
The Arc collection was created as a collaboration between OS & OOS and Hi-Macs and was launched at the Wallpaper* Handmade exhibition during Milan's design week in April.
![Arc by OS and OOS](https://static.dezeen.com/uploads/2015/05/Arc_OS-and-OOS_dezeen_468_0.jpg)
Other recent projects by the Eindhoven-based studio include a chair upholstered in fabric by Raf Simons and a modular lighting system joined by rubbery connectors.