The hata kite is based on the Nachtvlieger of the Musicaerial project. It is a large kite: the central stick is 2m40 long when assembled. In the simplified design that I make, there is a black horizontal band in the middle of the kite, which will be used to make the pressure sensor in. The other two colors are blue and purple - though at dusk the two colors seem to be similar.

After figuring out the shape for the pillows - I had to figure out how to cut the foam in an easy way - and then convince the people working at the foam shop to cut it for me. Luckily, having figured out the order in advance, this worked out quite well.

The pictures show a reconstruction of the cutting process.

The setup at the Artefact exhibition was that the audience would watch the kites from the Queen's Balcony opposite of the large roof on top of the theatre hall. The audience would sit on sitting bags. For the special, private listening experience, I created pillow phones togeter with Tineken van Hilten - using embroided spirals of copper thread and strong magnets we made speakers: as a current is going through the copper thread, it creates a magnetic field that interferes with the magnet's field, because of this, the cloth starts to vibrate. This vibration stays fairly low in volume - hence we rather call them softspeakers than loudspeakers.

For the shape of the pillows we were inspired by the kite designs that I made, which used a lot of triangles - so we tried to bring in the triangular form back into the pillow. Also, we use the same fabric as that the kites are made of - rip-stop nylon - in the colours that the two kites have to create a correspondence with the kites that are flown.

What seems interesting and relatively easy to do in OpenSCAD on the computer is rather complex and hard to make on the sewing machine. While making the first version of the delta kite, I have to come to the conclusion that the design is too complex to get symmetric. When I fly it, adding a tail makes it a bit more steady in the air, but all in all it seems to tend to one particular side.

However, building this kite helps me figure out the process in detail, to simplify the design, come up with a way to make the pressure sensor and what to pay attention to while sewing the kite. While making the two kites that follow, I can be a lot more precise in the process.