06 — Materials / Pens2023

CHAFF CO.

Writing with a fountain pen made from coffee chaff
Context3rd Bachelor project, TU/e
TeamGroup project
My partExploration & fabrication of demonstrators
MethodMaterial Driven Design

I made a pen from
coffee waste. It taught
me why I stopped
using plastic.

Coffee chaff is the papery skin that comes off coffee beans during roasting, a waste stream nobody wants. We used Material Driven Design to find out what it’s good for, and made a small “product range”: a pen to show its looks, paper to show it’s practical, and a candle to involve every sense.

01 / Exploration

Five senses, one waste stream

We tested chaff for sight, touch, smell, sound and even taste. We burned it, cast it, pressed it and mixed it with binders, to map its aesthetic and emotional qualities against the energy it costs to process.

Coffee chaff falling
Burning chaff on gravel
Cast chaff samples
02 / The pen

Beautiful, and wrong in the hand

The chaff pen machined like any other pen, and its look is completely its own. But the binder was essentially acrylic. Despite all that organic material inside, it felt like plastic in the hand: not warm, not alive.

That’s the moment I decided the feel in the hand beats the look. Since then my pens are wood and ebonite only.

Pressed chaff sample
Mixing chaff into resin
Chaff candles
The chaff pen writing
Cast samples
Next project TreeD