Modular gantry
Large-format mechanical architecture designed around an industrial operating envelope.
Large-format construction automation
Low-carbon cement technology
Industrial 3D printing.
Built around the gantry.
A gantry platform for large-format concrete extrusion, with a 21 × 15 × 9 m working envelope. Over 100 full-scale prints completed. Built to order from Bulgaria.
21 mbuild length
15 mbuild width
9 mbuild height
100+full-scale prints
The platform
A full-scale industrial working envelope.
Mechanical gantry architecture, controlled material delivery, extrusion and digital motion control are integrated into one modular production platform.
Material system
Preparation, delivery and controlled extrusion for locally adapted cement-based mixes.
Digital control
CNC-based motion, proprietary software and toolpath execution across the build area.
Industrial integration
Safety, commissioning, operator training and technical support built into deployment.
Operating parameters
Designed for controlled, repeatable material placement.
Figures below are from full-scale printing. Final commissioning values are confirmed per machine and per material.
- Control precision
- ~0.2 mmpositioning control
- Layer height
- 20-40 mmmaterial and nozzle dependent
- Vertical production
- up to ~0.6 mwall height per working shift*
* Performance depends on material behaviour, geometry, curing conditions and operating procedures and is subject to pilot validation.
Commercial configuration
Investment shaped around your production scope.
Each platform is configured around the required working envelope, material system, automation level, site conditions and commissioning scope.
Request a tailored quotation- Platform investment
- Tailored quotationbased on configuration, installation and support scope
- Lead time
- Approximately 24 weekssubject to final configuration and site readiness
- Included
- Gantry structure, material delivery and extrusion system, control software, commissioning on site, operator training and 36 months technical support.
- Not included
- Foundation preparation, site power and water supply, and material supply.
Technology workflow
From digital model to finished object.
Bespoke forms for architecture, public spaces and landscape projects.
First delivered project
Eva Park — objects for themed spaces
For the Japanese setting we produced decorative characters and a red bench. For the Greek one, white benches with expressive flowing forms. The design and colour of each object are adapted to its surroundings.
Repeatable production process
The platform connects software, machine motion and cement-based material processing in one repeatable workflow.
- 01
Digital model
Application geometry is prepared for large-format additive production.
- 02
Toolpath generation
Machine paths and process parameters are translated into CNC-based control.
- 03
Material preparation
Cement-based mixes are adapted with material partners for the target application.
- 04
Layer-by-layer extrusion
Material is placed continuously within the platform working envelope.
Engineering evidence
Built on full-scale printing, not simulation.
100+full-scale prints
Full-scalewalls and geometries
Proprietarycontrol software
Applications
One platform, multiple industrial use cases.
Applications are developed and validated with material producers, manufacturers, contractors and research partners.
Pilot house — Burgas, Bulgaria, 215 m²
Full-scale construction
Walls and building-scale structures within the gantry envelope.
Digital production supports curved geometry, controlled material placement and reduced dependence on conventional formwork.
Precast components
Repeatable walls, panels, forms and custom cement-based elements.
Material validation
Controlled testing for printable conventional and lower-carbon formulations.
Infrastructure elements
Application-specific geometries for qualified industrial pilot programmes.
Architectural forms
Complex, curved and customised elements generated from digital toolpaths.
Cement decarbonization
Lower-carbon cement, validated at scale.
AddLine's platform doubles as an industrial validation tool for lower-carbon cement-based formulations, supporting material producers who need repeatable, measured process data before commercial adoption.
Formulation screening
Assess pumpability, extrusion behaviour and buildability under controlled operating conditions.
Process data
Generate repeatable production evidence across material delivery, toolpaths and layer formation.
Scale-up readiness
Support material producers with measured validation before industrial pilots and commercial adoption.
Low-carbon construction materials
Lightweight Mineral Foam Concrete
A mineral, breathable and cost-efficient wall-core concept for 3D-printed construction.
AddLine is developing a 3D printed wall system approach that combines a printed cement-based outer shell with lightweight mineral foam-concrete infill.
This approach is intended to reduce wall-package cost, lower structural weight, reduce dependency on multi-stage manual wall construction and simplify the construction sequence compared with traditional ceramic block, insulation, plasterboard, plastering and finishing layers.
The wall concept is based on mineral cement-based materials and is intended to support breathable, vapour-permeable wall structures with natural moisture exchange and a comfortable indoor environment.
Performance characteristics such as compressive strength, thermal behaviour, moisture behaviour, durability and regulatory compliance are intended to be validated through planned EU-based demonstration activities, pilot testing and external verification where required.
Construction automation
Continuous Foam-Concrete Delivery
up to 6 m³/htarget capacity, subject to pilot validation
Traditional foam-concrete production is commonly organised in batch cycles, where material is prepared in portions before placement. Typical small-to-medium foam-concrete equipment often works with limited batch volumes, which can restrict continuity and productivity on larger wall applications.
AddLine is developing a continuous-feed approach designed to deliver lightweight mineral foam concrete directly into the printed wall system. The target production capacity is up to 6 m³/hour, subject to validation through pilot testing, material stability checks and external verification where required.
This continuous process is important because it supports industrial-scale wall production, reduces manual handling, improves process continuity and strengthens the overall economics of the 3D-printed wall system.
Material proof
Material Proof: Ultra-Light Mineral Foam Concrete
Recent internal testing demonstrated an ultra-light mineral foam-concrete sample with a calculated density of approximately 175 kg/m³.
- Test block
- 100 × 300 × 500 mm
- Volume
- 15 litres
- Weight
- 2.62 kg
- Calculated density
- approx. 175 kg/m³
- Application
- Lightweight wall-core infill for printed cement-based wall systems
Validation note: this is an internal material test sample. Final construction-performance claims will require further testing, project-specific engineering and external verification where required.
Material Efficiency as Decarbonization
Foam concrete produced using conventional batch-based methods generally starts at densities of approximately 300 kg/m³ and above.
AddLine has already produced and documented an ultra-light mineral foam-concrete test sample with a calculated density of approximately 175 kg/m³, as demonstrated in the accompanying video. This result confirms our ability to work within a significantly lower density range of approximately 150–200 kg/m³ for non-load-bearing wall-core infill.
At the same filled volume, a density of 150–200 kg/m³ means approximately 33–50% less wall-core material mass than foam concrete at 300 kg/m³. This substantial reduction in material use is a direct contribution to construction decarbonization: fewer raw materials are required, less material must be transported and handled, and the embodied-carbon burden of wall production can be reduced.
Material-efficient construction
Material-Efficient Wall Production
A preliminary Burgas-based wall-package comparison indicates that the AddLine 3D printing scenario may significantly reduce wall-package cost and wall execution time compared with a traditional ceramic block / insulation / plasterboard / plastering / finishing sequence.
This is not a whole-building cost comparison. The 54.3% figure applies only to the wall package. Foundations, the load-bearing structural system, roofing, MEP systems, windows, doors and other conventional construction works are not included and may still be executed using conventional methods.
These figures are preliminary and based on a specific Burgas wall-package case. Results depend on project design, local material prices, labour costs, engineering requirements and validation data. Detailed assumptions, calculations and comparative tables are available separately for investors, industrial partners and pilot customers.
| Wall scenario | Wall-package cost | Est. execution |
|---|---|---|
| AddLine 3D printing wall scenario | EUR 8,829 | approx. 1 week |
| Traditional ceramic block wall scenario | EUR 19,333 | approx. 4–6 weeks |
| Wall-package difference | EUR 10,504 | approx. 54.3% lower wall-package budget |
Wall-package saving
approx. 54.3%
Preliminary and case-specific. Walls only, Burgas wall-package case.
Whole-building potential
approx. 25–30%
Indicative, to be validated. At whole-building level, the potential total cost reduction is estimated at approximately 25–30%, subject to project design, engineering requirements, local material prices, labour costs, validation data and external verification where required.
Supporting calculations are based on a preliminary comparison prepared for one house in Burgas and are available separately upon request.
Integrated industrial workflow
More Than a Printer: A New Wall-Production Process
AddLine is not only developing a 3D concrete printer. The company is developing an integrated industrial workflow for cost-efficient cement-based wall production.
Instead of adding more labour, more layers and more manual operations, AddLine focuses on automated placement, lightweight mineral infill and fewer construction stages.
The advantage comes from the combination of:
- Robotic cement-material extrusion
- Printed mineral wall geometry
- Lightweight foam-concrete infill
- Continuous material delivery
- Local material adaptation
- Reduced formwork dependency
- Fewer manual construction stages
- Measurable process control
Printing in motion
See the material, motion and layer control in practice.
Production views from AddLine printing trials, showing large-format extrusion and continuous curved geometry.
Industrial delivery model
Engineering retained. Deployment supported.
AddLine keeps system engineering, software, integration, final assembly and commissioning at the core of each platform deployment.
Application engineering
Working envelope, material workflow and customer application definition.
Manufacturing and integration
Qualified suppliers for standard structures and components, integrated under AddLine engineering control.
Commissioning
Mechanical, extrusion, control and safety systems assembled and tested together.
Training and support
Operator onboarding, process guidance, maintenance planning and technical assistance.
AddLine Technologies
Engineering experience, now building from Bulgaria.
AddLine combines construction engineering, machine design, CNC automation, software and cement-material process know-how. The technology was developed and proven in production before the company moved to Bulgaria. The first EU-built platform is now in preparation in Burgas.
BurgasBulgaria / European Union
2026Selected for HARD2SCALE Accelerator
Roman MozhaievFounder, Managing Director & Head of Engineering
Alexander BihmaLead Mechanical Engineer
Alexander VasylenkoSoftware & Automation Engineer
From digital paths
to finished geometry.
Start a technical conversation
Tell us what you need to produce.
We work with contractors, precast manufacturers and material producers who want to bring large-format printing into their own production.
Add Line Technologies LTDBurgas, Bulgaria