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Smaller Objects

Biru Bottle Opener

By Claesson Koivisto Rune

Biru Bottle Opener Biru Bottle Opener Biru Bottle Opener

$29 CAD

There is currently 3 in stock. This item typically ships in 1-2 business days.


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The French mathematician Gabriel Lamé first described the formula of the superellipse. Danish poet and scientist Piet Hein found practical use for it. Swedish architect and designer Bruno Mathsson refined it into the famous Superellipse table. What is less well known is that Piet Hein, in collaboration with architect David Helldén, designed Stockholm’s central square, Sergels Torg, using the superellipse – or perhaps more accurately, the supercircle – for the defining traffic circle.

In its presentation, Hein wrote: “Things made with straight lines fit well together and save space. And we can move easily around things made with round lines. But we are in a straightjacket, having to accept one or the other. The superellipse solves the problem. It’s neither nor. Yet it is definite – it has unity.”

The Biru bottle opener combines a superellipse and a supercircle to a harmonic figure that sits perfectly in the palm of the hand.

  • Claesson Koivisto Rune, Sweden (2016)
  • Matte Stainless Steel
  • Made in Sweden
  • Diameter 2.7"

Smaller Objects

Stockholm, Sweden

Smaller Objects was established by internationally acclaimed architects Mårten Claesson, Eero Koivisto and Ola Rune in 2015.

The product range consists of useful design objects for the home, in materials such as wool, ceramics, wood and steel.

“As with everything we are involved in, we believe in the longterm perspective. Hopefully we will be able to inspire people to choose well-designed everyday objects that will be cherished until they’re passed on or inherited”, the trio says.

The range of objects will evolve over time.

View The Smaller Objects Collection