3DSP
The printed stone portal Anti-Ruin at the Venice Architecture Biennale 2025

Architecture, art & interiors

Stone is a design material again

Design-driven forms in genuine stone from local quarry and no cement. Strong, resilient, non-combustible and sustainable.

Freedom

You decide what is possible!

Façades, panels, structural components, and more. Tell us what your next creation will be.

Working together

From your model to finished stone

Every project is quoted from your model.

  1. 01

    Your sketch or model

    Send us a sketch, drawings or a 3D model. A finished model is not needed to start.

  2. 02

    Made for printing

    We check it with you and optimize it for printing if needed.

  3. 03

    Samples and a prototype

    Samples of the material and finish, then a first piece to see and touch.

  4. 04

    Printing and finishing

    Every element printed and finished in our workshop.

  5. 05

    Delivered

    Every element delivered to your site, numbered and ready for your contractor.

Other ways to work with us →

Precision

Every material, every finish

The sand sets the colour and the grain; the finish sets how the surface feels and catches the light. See them in your hands. We send samples on request.

Marble

  • As printed
  • Sandblasted
  • Milled
  • Ground
  • Polished

Granite

  • As printed
  • Sandblasted
  • Milled
  • Ground
  • Polished

Sandstone

  • As printed
  • Sandblasted
  • Milled
  • Ground
  • Polished

Brick dust

  • As printed
  • Sandblasted
  • Milled
  • Ground
  • Polished

Recycled concrete

  • As printed
  • Sandblasted
  • Milled
  • Ground
  • Polished

Sustainability

Made from what is already there

The stone comes from what quarries and building sites leave behind, close to where it will stand. No cement, low carbon, fully circular.

  • Local material

    Any sand, demolition rubble or brick dust. We can work with local quarries and produce on site.

  • No cement

    A geopolymer binder, cured at room temperature, with no kiln.

  • Only where it is needed

    Hollow shells and lattices, printed to the load, instead of solid blocks cut down.

  • Back into the printer

    If a piece is no longer needed, it can be crushed and printed again.

Performance

Strong enough to build with

Tested by an independent accredited laboratory.

37 MPa
Mean compressive strength, in an independent accredited test
No loss
of strength after freeze–thaw testing
Fire resistant
Non-combustible and insulating, with no resin and no cement
Compressive strength by machine generationIn-house test results rising from 1.8 MPa (2018) to 40.1 MPa (Proto 2.0). Independent accredited mean: 37 MPa.010203040Accredited test, mean 37 MPa1.8 MPa2.4 MPa3.7 MPa4.5 MPa5.8 MPa7.8 MPaProto 1.0 / 1.12018–1912.8 MPa13.1 MPa14.5 MPa16.2 MPaProto 1.1.1202019.1 MPa22.6 MPa26.1 MPa28.4 MPaProto 1.1.1202130.8 MPa37.7 MPa40.1 MPaProto 2.02022–40.130.81.8Compressive strength by machine generationIn-house test results rising from 1.8 MPa (2018) to 40.1 MPa (Proto 2.0). Independent accredited mean: 37 MPa.010203040Accredited test, mean 37 MPa1.8 MPa2.4 MPa3.7 MPa4.5 MPa5.8 MPa7.8 MPaProto 1.0 / 1.12018–1912.8 MPa13.1 MPa14.5 MPa16.2 MPaProto 1.1.1202019.1 MPa22.6 MPa26.1 MPa28.4 MPaProto 1.1.1202130.8 MPa37.7 MPa40.1 MPaProto 2.02022–40.130.81.8
Compressive strength (MPa), in-house tests per machine generation. Dashed line: independent test by a UKAS-accredited laboratory, 2026.

Every project is approved on its own. We provide the test data and work with the project engineer.

Proof

What we have built

All applications →

Interiors

Designed for the rooms you build

Lighting and furniture in printed stone, from our designers, ready to print in the stone and finish you choose.

All products →

Your questions

What architects ask us

Something else? Ask us directly.

Do I need a finished 3D model?

No. A sketch or drawings are enough to start. We develop the printable geometry with you, with its joints, fixings, cavities and channels.

Is it really stone?

Yes. Quarry fines, demolition rubble or brick dust, bound by a geopolymer instead of cement. It contains no resin and no plastic, and it does not burn.

Can it stand outside?

Yes. It shows no strength loss after freeze–thaw testing. From Thames to Eternity stands outside St Paul’s Cathedral in London.

Will it be approved for my building?

Every project is approved on its own. We provide the test data from an independent accredited laboratory and work with your engineer.

Can I see and touch it first?

Yes. Order a set of samples, one piece printed in up to three finishes in the material you choose, and we ship it to you.

What does it cost?

Every project is quoted from your model, and the first consultation and the quote are free. The price follows the volume of stone and the finish, not the complexity of the shape.

How long does it take?

It depends on the volume. You get a timeline with the quote, and samples come before the series.

Have a design that’s hard to build?

Send us the model and where it will stand. We reply within a few working days.

How do you find the site?

This is a first version. Tell us what works, what doesn’t and what is missing.

Overall

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What is it about?