3D Days - March 18, 19, and 20, 2026

Exclusive Open House at the Citadelle des Savoir-Faire.

3D Days

The 3D Days are the three major days of the year during which the Citadelle des Savoir-Faire and all the companies based there open their doors to the public.

This event offers an exclusive behind-the-scenes access to areas that are usually closed, live demonstrations—some of which are only presented once a year—and innovations unveiled for the first time by each entity.

It’s the perfect time to discover all our technologies, meet our teams, and participate in the key moments that define our annual rhythm.

Schedule – 3D DAYS – Thursday, March 19

  • 9:30 AM – Participant Registration
    Registration at the Citadelle des Savoir-Faire Welcome Desk
  • Live Demonstrations & Experiences – All Day
    • Live 3D Printing: plastic, resin, and concrete
    • Advanced materials & processes demonstrations
  • Reveals & Exclusive Announcements
    Announcements and reveals, world premieres for each company
  • Project & Client Gallery
    • Public presentation of the gallery
    • Portraits of our clients worldwide
  • Exclusive Visits & Open Doors
    Mini-guided tours with exclusive access to behind-the-scenes areas, buildings, and factories
  • 12:00 PM – Citadelle Grand BBQ
  • 6:00 PM – End of Visits

  • Machines-3D

    European specialist in 3D printing solutions, 3D scanning, and digital manufacturing.

  • Constructions-3D

    French manufacturer of 3D concrete printing solutions for full-scale buildings.

  • Termix-3D

    Laboratory and manufacturing plant for innovative 3D concrete printing materials.

  • Com-3D

    Integrated agency dedicated to communication, design, and creative content.

  • Farm-3D

    Mobile 4.0 workshop for additive manufacturing and rapid prototyping.

  • Résine-3D

    Expert in high-precision resin printing for technical applications.

  • Solar-3D

    Solar energy solutions for industrial infrastructures.

  • Jtech-3D

    Engineering firm specialized in robotics, mechatronics, and industrial development.

  • L’Association de l’Éléphant de la Quête

    Cultural organization working to enhance the artistic and heritage value of the region.

Citadelle des Savoir-Faire

83 rue des Mines Innovantes

59860 Bruay-sur-l'Escaut

France

© 2026 3D Days