concrete 3d printer - Delta WASP 3MT CONCRETE - fronte
Delta WASP 3MT - logo


Starting from 60.335* €

With a build area of big dimension and its unique versatility, concrete 3D printer Delta WASP 3MT CONCRETE defines a new standard in the world of additive manufacturing of concrete mortars.



Special Prefab
R&D LAb concrete centers


Research Centres


Temporary pavilion
Urban furniture
Landscape works


Ceramic cladding
Bathroom fixture
Decorative elements

concrete 3d printer - Delta WASP 3MT CONCRETE - side


Build volume Ø 1000 x h 1000 mm (h max 1000 mm, from the ground)
Print speed max 200 mm/s
Travel speed max 200 mm/s
Acceleration 150 mm/s2

Nozzle diameter (LDM WASP EXTRUDER XL) Ø 4 – 6 – 8 mm
Nozzle diameter (LDM WASP EXTRUDER XXL) Ø from 8 to 30 mm

Advised nozzles:
Concrete, Earth based materials Ø from 18 to 30 mm
Clay Ø from 8 to 18 mm

Suitable materials

LDM WASP EXTRUDER XXL Ø from 8 to 30 mm
concrete mortars with max particle size 1 mm, fiber reinforced concrete (polymeric fibres, Lmax 30 mm; Wmax 15 kg/mc), foamed concrete, clay, porcelain, gres, earth based mixtures with natural fibres.

clay, porcelain, gres

Supply of cementitious pre-mixed mortars and mixtures improved and tested for 3D printing.
Test on property materials for 3D printing, consultancy and in-depth analysis of technical aspects oriented to design and 3D printing on architectural size.

LDM WASP Extruder XXL* screw extruder for big and fast prints with clay and concrete
Nozzle diameter: Ø from  8 to 30 mm
*standard tool with printer

LDM WASP Extruder XL screw extruder for precise and high-quality prints with clay
Nozzle diameter: Ø  4 – 6 – 8 mm

With the LDM WASP Extruder XXL kit – Continuos Feeding System WASP supplies the printer with a mortar pump for cement:

Load volume 80 L
Length of supplied tube 5 m
Maximum pressure 35 bar
Maximum granulometry 1 mm
Maximum flow 250 L/h
Dimensions (L x b x h) 140 x 70 x 81 cm
Machine weight 185 kg
Frame material Steel
Input power 220/240 V 50/60 Hz
Motor power 2200 W
Packaging in wooden box for national/international shipping.
Box C 140 x 80 x 120, weight: 15 kg

Operative system WIndows, Mac, Linux;

Official Slicing: Simplify3D® license included;

Compatible Slicing: Cura, Slic3r;

File type .stl, .obj, .gcode;

Pendrive USB
Wifi network
Display TFT touch

Dimensions 215 cm x 235 cm x 305 cm
Machine weight 350 kg

The machine travels disassembled and it’s assembled in the work space by our technicians only. The required space for assembly is: 5,5 mt x 2,5 mt x h 3,60 mt.

Packaging in wooden box for national/international shipping
Box A 310 x 60 x 55 cm – weight 63 kg
Box B 227 x 60 x 150 cm – weight 82 kg

Input 220/240 V 50/60 Hz (110 V available)

Absorbed power:

Use 15-30° C
Warehouse 0-30° C

Frame and cover aluminum, painted steel. Metal carters, defeats machine’s vibrations, allows a more precise machine.
Bed MDF plate upon pallet.
Movements nylon wheels on anodized aluminum sliders steel-cored belts in delrin.
Insulation expanded polymer for acoustic insulation.
Motors axes Stepper

Plastic conical nozzles
Mortar pump 80 L
Tube 5 m
MDF plate upon pallet

The machine travels disassembled and it’s assembled in the work space by our technicians only. The required space for assembly is: 5,5 mt x 2,5 mt x h 3,60 mt. Packaging in wooden box for national/international shipping:

Box A 310 x 60 x 55 cm – weight 63 kg
Box B 227 x 60 x 150 cm – weight 82 kg
Box C* 140 x 80 x 120 cm – weight: 15 kg
*Pump for the LDM WASP Extruder XXL kit

At your warehouse in 4 weeks

WIFI machine connected to the network for monitoring and control.
Industria 4.0 3D printer with CE certification for compatibility with Industry 4.0 incentives.
New GUI new touch interface with bigger TFT display.
Camera on-board for monitoring and timelapse.
Remote intervention WASP technicians can follow you step-by-step remotely.
Continuous feeding system innovative system for material feeding, interconnected to pressure sensor.

The system recovers automatically interrupted prints in case of accidental shutdown or blackouts. Read more about Resurrection System

It’s possible to measure the height of interruption of the print and restart from there. Read more about Free Z-System

Industry 4.0
3D printer with CE certification for compatibility with Industry 4.0 incentives.

Industrial tools

This concrete 3D printer, Delta WASP 3MT INDUSTRIAL 4.0 LDM is optimized for large 3D printing and can be configured with the following tools:

LDM WASP Extruder XXL* screw extruder for cement mortars, mixtures based on raw earth and natural fibers and clay based mixtures with continuous feeding system.
Nozzle diameter: from 8 to 30 mm.
Clay: 8 – 18 mm
Cement mortars and natural mixtures: 18 – 30 mm
* Tool standard with the printer

LDM WASP Extruder XL screw extruder for dense fluid materials: clay, porcelain, stoneware with 3/5 kg tank.
Nozzle diameter: 4 – 6 – 8 mm.


pump concrete 3d printer - Delta WASP 3MT CONCRETE

Continuous Feeding System

The LDM WASP Extruder XXL is feeded using a mortar pump that delivers the material through a tube. The flow rate is controlled via a pressure sensor mounted on the extruder inlet, that is capable of continuously measuring the pressure and therefore the flow of outbound material in order to achieve the best extrusion conditions. By using the pump control unit, all the pumping variables can be set according to the type of material and to the paste consistency.

Concrete 3D Printer

Delta WASP 3MT CONCRETE is manufactured in metal with strong steel cored belts and is equipped with special grid panels to work in complete safety.

With this big dimension 3D printer is possible to create concrete mortar products thanks to an innovative extrusion system equipped with a special mortar pump and a screw-driven extruder.

Furthermore the MDF pallet bed and the removable front lower beam allow to remove, once the printing activity is completed, the objects printed both via pallet truck and forklift.

WASP Consultancy

From the experience gained in the field of 3D design and fluid-dense construction materials developed for 3D printing, WASP provides long-term consultancy for the optimization of the production process.

  • Supply of pre-mixed cement mortars and natural mixtures developed for 3D printing;
  • Experimentation of proprietary materials for 3D printing;
  • Technical consultancy for the design for 3D printing and 3D slicing.

Wasp Plus +


Ø 1000 mm x h 1000 mm = 1000 l


Compatible with automatic continuous mixer


Real-time control of pumping and extrusion variables


250 litre/h


Retraction control in extrusion


Concrete - Natural Mixtures - Clay


Machine connected to the network for monitoring and control


A system which allow users to save their print job and resume it in the case of power failure. Read more >>


It allows to print a file starting from a precise height of the model to be printed, height previously selected. Read more >>

3D printer with CE certification for compatibility with Industry 4.0 incentives. Delta WASP 3MT INDUSTRIAL 4.0 LDM can be connected to Wi-Fi network so that you can manage your printer from smartphone, tablet or PC. Inside the printer there’s now a camera for monitoring the print even from remote.




The 3D printing of cementitious materials allows you to completely rethink the construction according to an additive approach, by optimizing the production of custom components and minimizing the use of cement towards the minimum environmental impact. The opportunities of 3D printing are increasingly entering the current construction market because they offer new technical construction solutions, while integrating design and function, aesthetics and efficiency. 3D printing can really revolutionize the conventional serial production by cutting industrialization times and product modification according to design needs, each time different.

3D printing is a production process that requires particular care in the design phase in light of the continuous balance that is established between the printing process and the material change of state. The rheology of the material, in the fresh state, together with the design geometry are decisive for the material to be self-supporting during the extrusion phase. For this reason it is suggested to design 3D models with interconnections and overhangs not exceeding 15 degrees on the vertical plane. Consider designing highly stable components with a planar base surface at least equal to the largest section. No supports are inserted in concrete printing because otherwise they would become an integral part of the printed object. An integrated approach is preferred between form, stability and final function, by taking advantage of stiffness by shape, articulated infills and a good compromise between overall weight and printing volume. For 3D modeling we recommend software (Rhinoceros, Blender, Autocad) capable of creating closed objects (brep, mesh), while for slicing we recommend Simplify3D software that is included in the Delta WASP 3MT Concrete purchase.

Concrete 3D printing consists of the following operating phases: mixing and preparation of the material, startup of the 3D printer for the preliminary setup and preparation of the pumping system (filling the pump hopper with the fresh mixture, analog setting of the physical parameters of the material of printing). The extrusion takes place in a closed and controlled setting inside the printer; during the printing operation it is necessary to feed the pumping system with material, checking the filling level inside the pump hopper. Once printing is finished, it is possible to extract the underlying surface, and consequently the printed object, using a transpallet or a forklift. Given the strong aggressiveness of cement mixtures, the entire pumping system needs to be washed with running water. It is mandatory to carry out cleaning operations far from the printer and the control unit.

The mixing of the cement mixture can be carried out using a cement mixer or continuous mixer, with minimum batches of use of 40 liters. In the case of packaged premixed mortar, it is only necessary to add the amount of water that makes the material in the fresh state easily workable in a range of time comparable to that before extrusion (consider at least 60 minutes). In the case of self-packaged mixing, consider the use of a concrete mixer with total batches not exceeding 80 liters. The guidelines for the mix design go to the next point.

The cement mixture suitable for 3D printing consists of the following main components: cement (CEM 32.5 / 42.5 R), silica river sand (maximum grain size 1 mm), water, viscosity modifying and super plasticizing admixtures (to promote pumpability and maintaining the consistency suitable for extrusion). The quantities of each single constituent depend on multiple factors such as: the expected performance, the containment of shrinkage, the programmed workability and setting time for printing, the specific weight. Consider a water/cement ratio = 0.3 and cement/sand ratio = 0.5.

Upon specific request and on the occasion of each installation, we prepare a cement mixture validated by our experience in the field. We can provide the indications of the mix design and the availability on the local market of the necessary products, considering only the possible shipment of chemical admixtures to reduce the carbon footprint of the shipment.

It is possible to use in the mixture polymeric fibers (PP, PVA) with a length not exceeding 2 cm. There are both anti-shrinkage fibers to limit the shrinkage during extrusion and reinforcement fibers to increase the tensile strength of the printed product. The excessive quantity of fibers can affect negatively on the mixture workability. Steel fibers are not currently supported by the pumping system.

Cementitious mixtures require an environment at a temperature not exceeding 25-30°C. For this reason it is recommended to work in closed laboratories with partial air conditioning.

The continuous feeding system makes it possible to use, as well as cement mixtures, natural mixtures based on raw earth, but also clay and gres mixtures. It is in fact possible to modify the pumping settings thanks to a control unit integrated into the pump; in this way it is possible to prepare the best set of parameters according to the type and consistency of the material.

The recommended nozzle diameter range for 3D printing of cement mixtures is 18-30 mm. The layer height varies from 9 to 15 mm, considering the layer/nozzle height ratio = 0.5. The thickness of the single layer varies from 20 to 40 mm, considering the partial expansion when laying the material. The nozzle diameter range of clay-based mixes is 8-18 mm.

The maximum printing volume is a cylinder with diameter D = 1 m and height h = 1 m from the ground. The use of a printing surface base affects the maximum height only.

Each mixture has specific hardening and setting times depending on the basic components present in the mix. In addition to the chemical composition, further incident factors are both of chemical-physical origin (amount of water, water temperature) and of operational-environmental origin (adequate mixing, air temperature, time interval prior to extrusion). It is recommended to use materials with workability times of over 60 minutes.

After each print session, or in any case at intervals of more than 30 minutes between one activity and another, the continuous feeding system needs to be washed with running water, according to a simple automatic cleaning procedure. The entire continuous feeding system, extruder included, can be easily disassembled and washed in an area adjacent to the work area, equipped with an adequate wastewater collection system. It is mandatory to carry out cleaning operations far from the printer and the control unit.

Current international academic research is focusing on defining mechanical behavior and quantifying the strength of 3D printed elements. The compressive and tensile strengths vary mainly depending on the mixture used and on the orientation of the layering planes of the printed object once installed.

3D concrete printing allows the construction of walls, architectural cladding systems and sculptural works in a contemporary approach of modular assembly. Thanks to 3D technology, the production of large elements, even with a high formal complexity, takes on a significant and increasingly viable role in achieving solutions that are difficult to reach or even impracticable with traditional techniques. It is in fact possible to design and produce construction modules with different shapes, functions and materials.

The minimum space required for the installation of Delta WASP 3MT CONCRETE consists of a surface area of 2.5 m x 5.5 m and 3.60 m high. The workspace, related to the 3D printing activity only, consists of a surface area 3 m x 4 m high 3.10 m. It is recommended to notify our technical staff in case of obstacles of the workspace, both at floor and ceiling level.

The operator dedicated to 3D printing operations must have followed the first use course, scheduled for the day after installation. The operator does not require special training in the field of chemistry of materials but must know the principles underlying the operation of the 3D printer and the pumping system in full awareness of the risks arising from the use of cement.

Consultancy is the basis of the customer’s training and support service both in the phase prior to the purchase of the printer and in the subsequent phase. We provide a consultancy service on the following areas: 3D modeling, slicing optimization, feasibility study and optimization of the extrusion material.