Svänga förbi hero image

Svänga förbi

SVÄNGA FÖRBI


Role
Sketches, CAD and renderings
Team
Group of five
Year
Autumn 2025
Tools
Fusion 360, Blender, Photoshop
Type
Course project · Material for Design (TMKM11), Linköping University

A hanging sofa swing in aluminium, cross-laminated timber and steel wire, made for the course Material for Design at Linköping University.

The process

  1. 01UnderstandInconcrete brutalism: a product in at least two materials, made for people in Vadstena.The brief
  2. 02IdeateWays of hanging a seat, on paper and in quick AI images.Sketches
  3. 03DevelopA structure with nothing hidden, and how aluminium, timber and steel wire meet.Nothing hidden · Three materials
  4. 04BuildA scale model of the whole swing, with 3D printed legs.The model
  5. 05DeliverThe swing placed on a wooden deck at dusk.In place
  6. 06ReflectWhat testing the strength would have taught us.Looking back
Understand01 01

The brief

Brutalism takes its name from béton brut, raw concrete. The architecture historian Reyner Banham described it by three traits: a memorable image, a structure shown clearly, and materials valued as they are found.

The brief took the concrete away: inconcrete brutalism. The task was a product in at least two materials from different material classes, with the focus on how they meet, made for people in Vadstena to buy and use.

Front view of the swing: a timber sofa with pink cushions hanging in steel wires from a beam held up by arched aluminium profiles,
Front view
Ideate02 02

Sketches

I started on paper, trying different ways of hanging a seat: from a single curved post, in a frame, as a hammock between two posts, and as a sofa hanging from a beam.

Ink sketch of a seat hanging in wires from one curved post
One curved post
Ink sketch of a box seat hanging in a rectangular frame
A seat in a frame
Ink sketch of a net hammock hanging between two posts
A hammock between posts
Pencil and ink sketch of a sofa hanging from a beam between two posts
A sofa hanging from a beam

Quick AI-generated images were used alongside the sketches to test directions: a fabric hammock, a slatted seat and a heavy timber frame with a hanging bench.

AI-generated image of a fabric hammock hanging between two heavy timber posts
AI image: fabric hammock
AI-generated image of a curved slatted wooden seat hanging in a timber frame with steel brackets
AI image: slatted seat
AI-generated image of a wooden bench swing hanging in a heavy timber frame in a garden
AI image: hanging bench
Develop03 03

Nothing hidden

The brutalism is in the structure. Nothing is covered up: the frame, the beam and the wires that carry the sofa are all in plain view, and the scale is big and heavy on purpose.

The frame is made of aluminium profiles bent into arches. Raw, industrial parts used as they are, the way the buildings the brief started from used concrete.

Side view of the swing: arched aluminium profiles, the wires meeting at one point in the beam, the sofa with a tilted backrest
Side view: the wires meet at one point in the beam
Sketch-style CAD side view of an arched frame with the sofa hanging inside
Side view in CAD
Develop03 04

Three materials

How the materials meet was the core of the course. The sofa is a box of cross-laminated timber that hangs in steel wires, fixed with eye bolts and wire locks so every connection can be seen.

Close-up of the timber sofa with pink cushions; steel wires fixed to eye bolts on the armrests and backrest
Where the wires meet the sofa
Sketch-style CAD side view of the sofa with the seat lifted
The sofa from the side, seat lifted
Sketch-style CAD perspective of the sofa with hidden lines showing the inside
The sofa in CAD
Cross-section of the aluminium profile, white lines
Profile section

Joint studies on paper.

Joint study
Joint study: hinge
Build04 05

The model

The brief asked for a model of the most interesting parts of the product. We built the whole swing in scale and showed it in front of the two project posters.

The aluminium profiles of the legs are 3D printed, and the sofa is made of spray-painted MDF.

Scale model of the swing on a table in front of two posters titled Svänga förbi: a rendering of the swing and a process poster
The model with the two posters
Close-up of the scale model: 3D printed legs, a wooden beam and a small sofa in spray-painted MDF with white cushions, hanging in wires
3D printed legs, sofa in spray-painted MDF
Deliver05 06

In place

Finally the swing was placed in a setting: a wooden deck in front of a house at dusk.

An empty wooden deck in front of a house at dusk
The swing standing on the wooden deck in front of the house at dusk
Scroll, and the swing appears on the deck.
Reflect06 07

Looking back

We never had time to test the strength and construction honestly, neither through simulations nor in real life. Doing so would have given the swing more realism and a better feel for it as an object: how it carries weight, and how it moves when you swing.