Concrete printers are big, slow, and unforgiving. The slicer has more to do than any small-format process: corner planning, layer-time scheduling, pumping pressure, hold zones. Most projects today are programmed by the same crew that designed the building, in CAD, by hand. That doesn't scale to a normal construction backlog.
Concrete printing isn't pen-on-paper. The nozzle weighs as much as a small car, the gantry takes seconds to accelerate, and the material starts curing the moment it leaves the pump. Bad path planning shows up as cold joints, blown corners, and walls that lean.
Architectural geometry (curved facades, tapered walls, integrated reinforcement channels) is exactly the geometry concrete AM is supposed to enable. But every novel shape today is a one-week programming exercise, done by someone with a structural engineering background and a CAM background, of which there are roughly twelve in the world.
Acceleration profiles slowed at corners so the bead doesn't pile or tear. Sharp transitions handled without operator input.
Layer times kept inside the material's working window. The slicer schedules dwell zones automatically when the wall would otherwise outrun the curing front.
Wall thickness varies through a single print. Pump pressure and travel speed adjusted continuously to match.
Cavities for rebar, post-tensioning, and embedded services planned as first-class regions, not afterthoughts cut into a finished mesh.
The slicer accounts for pump-line length and head pressure so what comes out of the nozzle matches what the path planner expected.
Direct ingest of the kind of geometry architects actually deliver (Rhino, Revit, IFC) without a manual mesh-conversion step in between.
Concrete AM is past the demo phase. The fleet of large-format gantries actually deployed in the field is small, but it's growing every quarter, and the firms running them have moved from "can we print a wall?" to "can we print a backlog?" That second question is a slicer question.
Send us your gantry and the geometry you wish you could print this quarter. We'll come back with a program.