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MIXED AND COMPACTEDCPI %u2013 Concrete Plant International | India Edition %u2013 1 | 2026 www.cpi-worldwide.comOn the last page of the magazine, we offer you a mixture of interesting and curious aspects from the concrete world, together with a compact description of what it is about and how it came to be. If you have an idea for this page (including a photograph and short text), please email us your suggestion together with your name and company details. Successful entries will be rewarded with a Concrete Pen. Email your proposal to: editor@cpi-worldwide.com86Sustainable reconstruction from a 3D printerPrecast concrete elements as an alternative to stonemasonryWith the restoration of the guest house at the Stallmann-Hiestand winery in Rheinhessen, Germany, New Digital Craft demonstrates how digital manufacturing technologies can make the reconstruction of historic natural stone walls more sustainable, faster and more economical. The project offered ideal conditions for this: The ten jambs on the ground floor had been completely destroyed in the 1980s. The jambs on the first floor, on the other hand, remained completely intact and served as a precise template for digitally capturing and reconstructing the missing components using a scanning method.A key component of the implementation is a fully digital process chain based on the specially developed scan-to-production method. First, existing structures are captured in high resolution using modern scanning technology. This data is used to create a parametric 3D model that defines the mould construction for the subsequent concrete casting. The formwork is produced in full size on large-format 3D printers and can be recycled after use. Similarly, new jambs can be designed entirely digitally and manufactured with the same precision without the need for existing templates.The manufacturing technique also offers functional advantages: Insulation cores can be specifically integrated into the concrete components, minimising thermal bridges and creating thermally optimised wall connections. For future projects, New Digital Craft is focusing on cement-free, insulating concretes that reduce CO2 emissions by up to 80 per cent compared to conventional concretes. The method is also economically convincing %u2013 compared to traditional stonemasonry, it can save up to 50 per cent of the costs.The project clearly reflects the core values of New Digital Craft. Founder J%u00f6rg Petri sums it up: %u201cOur digital construction solutions bring craftsmanship back to the building site in an affordable and sustainable way.%u201d nBased on the scan-to-production method developed by New Digital Craft, existing structures of the jambs are first recorded in high resolution using modern scanning technology. This data is then used to create a parametric 3D model that defines the mould construction for the subsequent concrete casting.FURTHER INFORMATIONBuilding owner: Stallmann-Hiestand WineryScan-to-production, design model & 3D printing: New Digital Craft GmbH %u2013 J%u00f6rg Petriwww.newdigitalcraft.comLaser scan: Sven AssmannConcrete work and assembly: Werner Midinet