Nagami 3D prints "aesthetically pleasing" portable toilet using plastic waste

Discarded plastic medical equipment from hospitals across Europe was melted into a filament and 3D-printed to create the mobile toilet cubicle The Throne, designed by Spanish studio Nagami for the foundation.

© Provided by Dezeen The Throne portable toilet by Nagami and on a construction site in the Swiss Alps

The portable toilet was produced over the course of three days and comprises three parts – a teardrop-shaped body, a dramatic, double-curved sliding door and a collection bucket for solid waste.

© Provided by Dezeen The Throne portable toilet (top image) was 3D printed by Nagami in Spain (above)

These are combined with an off-the-shelf separation toilet seat, which diverts the urine while the solids are composted so they can be put to use locally as a fertiliser.

The first prototype, which is currently being trialled on a building site in the Swiss Alps, was produced by an advanced seven-axis robotic printer in Nagami’s studio in Avila.

© Provided by Dezeen The portaloo is being trialled on a construction site in the Swiss Alps

But the hope is that ultimately, this process for 3D-printing complex structures with recycled plastic could be adopted using more readily available, local technology.

As 91 per cent of all plastic waste produced to date is still waiting to be recycled, founder Nachson Mimran said this abundant material could help to create accessible and affordable sanitation and shelter where they are needed most.

© Provided by Dezeen An oculus lets in light from the top of the structure

“Plastic waste is a very low cost, inexhaustible resource,” Mimran told Dezeen.

“The Throne is a proof of concept for it can be used to create large structures that are both aesthetically pleasing and immensely useful,” he added.

“But the cost of production needs to drop before this can be a viable solution for building structures in places like refugee settlements and urban slums.”

© Provided by Dezeen The cubicle has a distinctive ribbed finish created through the 3D-printing process

The Throne project is an evolution of the Bottle Brick Toilets that set up in the slums of Kampala, Uganda, in 2018, which used bricks made from plastic bottles as their structure to simultaneously tackle the lack of management systems for both human and plastic waste.

Nagami, which specialises in 3D-printed furniture, decided to build on this idea for The Throne by sourcing a filament made from recycled plastic medical trays by Dutch company ReFlow.

This is combined with a number of mechanical elements such as metal rails, which are inserted into the frame as it is being printed to accommodate the sliding door.

© Provided by Dezeen Public toilets in Tokyo’s Yoyogi Fukamachi Mini Park and the Haru-No-Ogawa Community Park by Shigeru Ban for the Tokyo Toilet project


Shigeru Ban designs pair of transparent public toilets in Tokyo

To prevent the accumulation of dirt and bacteria, Nagami had to avoid the use of 3D printing for the actual toilet seat, as the process creates distinctive grooves rather than a smooth, hygienic finish.

So the team decided to incorporate an off-the-shelf compost toilet instead.

© Provided by Dezeen An off-the-shelf separation toilet was used for hygiene reasons

“We wanted to demonstrate that large-scale 3D printing can offer much more than ornamental pieces and single material elements,” said Nagami CEO Manuel Jiménez García.

“Indeed, it allows for the integration of other pieces, materials and textures, opening the door for the creation of objects, which combine different features that are commonly hard to achieve through 3D printing.”

© Provided by Dezeen The toilet can be used in remote locations, which was founded by brother Nachson and Arieh Mimran in 2013, is a hybrid between a charitable foundation and a venture capital fund that invests in ethical businesses and funds philanthropic projects.

Although additive manufacturing is increasingly being used to create homes and entire neighbourhoods, similar large-scale work using recycled plastic filaments is still in its infancy.

Elsewhere, designers are already using the material to 3D-print chairs, electric tricycles and even podiums for the 2020 Tokyo Olympics.

The photography is by Dmitry Kostyukov.

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