Large-Format Concrete Printing

Concrete Multi-Planar

Overview

Large-format concrete printing is one of the fastest-growing applications of multi-axis additive manufacturing. From architectural elements to structural components, concrete 3D printing demands toolpath strategies that account for material behavior, layer adhesion times, and structural integrity.

Why Multi-Axis Slicing?

Standard 3-axis concrete printing is limited to geometries that can be built with horizontal layers. This restricts design freedom and often requires support structures or formwork — defeating the purpose of 3D printing.

With multi-planar slicing:

Print overhangs without supports by changing the build direction per region
Optimize layer orientation for structural strength
Handle complex geometries that would be impossible with flat-layer approaches

Key Considerations

Material Behavior

Concrete has a limited open time — each layer must bond before the previous layer cures too much. The slicer’s speed and timing controls let you optimize for this constraint.

Scale

Concrete parts are large. Toolpath compression is essential — our algorithm reduces file sizes by 10-100x while preserving accuracy, keeping file handling manageable even for building-scale prints.

Robot Integration

Concrete printing typically uses 6-axis robots or gantry systems. The 5 Axis Slicer supports both, with open-source postprocessors for all major robot brands.