BOD2

Summary

The COBOD BOD2 is a modular gantry-based 3D construction printer that deposits cementitious material layer by layer through a tangential steel nozzle, printing structural walls for residential, commercial, educational, and industrial buildings. It covers two subtasks within concrete construction printing: material mixing and feed, and layer deposition; reinforcement, roofing, MEP, and finishing stay with the crew. The BOD2 has been shipping since 2017 with 85 printers delivered to 23 customers across six continents, and COBOD maintains offices in Copenhagen, Miami, and Kuala Lumpur.

Material Mixing and Feed Layer Deposition (Printing)

How it works on your site

Material Mixing and Feed

The BOD2 extruder accepts locally approved cementitious mixes with aggregates up to 10 mm, which means crews can source material regionally rather than importing proprietary mortars. A concrete mixer-pump feeds material continuously through a hose to the gantry-mounted printhead. Three to four operators manage the material supply chain during printing: a printer operator, a materials operator, a materials operator helper, and a hands-on helper.

Layer Deposition (Printing)

The gantry moves the printhead along X, Y, and Z axes within a modular steel truss frame, depositing walls layer by layer without formwork. The tangential steel nozzle follows the movement direction, smoothing or texturing the wall surface during printing and reducing the need for post-treatment plastering. Onboard sensors measure the foundation surface and generate a height map; the printer compensates automatically for unevenness during the first layers until the print is level. Operators stop and start extrusion at any point to create openings for doors and windows.

How it worked on other sites

Walls for 3 multi-unit buildings, 21 residential units, largest building 348.54 m2 of printed wall.
26 working days for the largest building's wall printing.

56 m2 school building wall-printed in 18 hours.
BOD2 model 4-4-2 configuration (10 m x 10 m x 3 m print envelope).

Residential house printed in 5 days, designed for earthquake resistance.
First 3D printed building in Central Asia.

Robot also used by

Will it work on your site

Spec Value

Foundation Slab required, 10 mm/m flatness tolerance

Site preparation Crane for install; 3-phase power (380-480 V, 32 A); concrete mixer-pump

Power 380-480 V, 3-phase, 32 A, 50/60 Hz; tethered mains required

Connectivity WiFi or LAN; web interface via Chrome or Safari

Environment Outdoor rated (vendor-stated IP66); operates 5-35 C (hardware); concrete mix may further constrain temperature window

Autonomy Supervised printing; 3-4 operators during runs

Operating weight 5,390 kg

Print speed 400-500 mm/s typical; 250 mm/s without safety fence (EU)

Layer width 30-300 mm (nozzle-dependent; standard quick-release nozzles cover a narrower range)

Layer height 5-40 mm

Throughput 1 m2 double-skin wall in 5 min; up to 10 t concrete/h at max speed Actual rate depends on wall configuration, print speed setting, and mix design

Operator training Kamp C operated BOD2 independently 5 days after delivery and training COBOD also offers 2-week and 4-week training programs; duration may vary by operator experience

Print envelope Configurable from 4.5 x 4.5 x 4.1 m (min) to 12.1 x 50 x 9.1 m (max); built from 2.5 m modules Exact dimensions set per project via COBOD Configurator; one module lost on Z-axis for extruder clearance

Summary

How it works on your site

Material Mixing and Feed

Layer Deposition (Printing)

How it worked on other sites

PERI 3D Construction , PERI DREIHAUS Serial Housing

14Trees (Holcim/CDC Group JV) , 14Trees School

BM Partners , First 3D Printed House in Central Asia

Robot also used by

Will it work on your site

Talk to COBOD International