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Demì. The chopping board for all ages.

Cutting with one hand, at any age

Demì is a kitchen utensil designed for everyone who has the use of only one hand or one arm.

Demì is designed as a safety system for cutting food: it builds on instinctive behaviours, which widens its audience to many groups, from the youngest to the oldest.

Two overlapping surfaces that slide in one direction let the user hold the food in place by pressing with the body, so that it can be cut with one hand. The system does not exclude people without disabilities, and it also offers a steady, precise way of cutting food.

Demì was developed for Snips with the Design for All approach.

Photographs by Matteo Girola.

Accessibility and inclusive design in product design

Demì on a kitchen worktop beside the sink: the white board with its row of steel teeth, peppers and tomatoes in the background.
A hand slides a steel grater along Demì’s teeth; the user stands against the edge of the board, which projects from the worktop.

Demì: the system

How to hold food in place for cutting

The project is built entirely around the system that holds the food in place. The idea, which came from observing machinery in industrial food production, made a new way of cutting food possible.

Even more important was the realisation that pressure from the body, in particular from the abdomen at waist height, was essential to do the work of the hand that cannot be used.

Ergonomics, holistic ergonomics and Design for All

The body holds the food, one hand cuts it.

Pencil sketch of Demì’s two staggered rows of teeth, seen in perspective.
Demì seen from above: the two overlapping white surfaces, each with its row of steel teeth.
Demì seen from the front, at worktop height: the row of steel teeth rises behind the white surfaces.
A hand cuts a tomato with a knife while Demì’s teeth hold it; the body keeps the board steady at waist height.

Frequently asked questions

How do you cut food with one hand?

Demì has two overlapping surfaces that slide in one direction: pressure from the body, at waist height, pushes them and holds the food in place, so that the free hand can cut it. The system was tested by people who use only one hand, and it is also safer and more precise for those who use both.

Ergonomics, holistic ergonomics and Design for All

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Do you have an everyday object that currently excludes someone?

From observing gestures to the prototype, with the people who have the most difficulty: what works for them remains useful to everyone.

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