BigRep Launches ONE.5X Large-Format Printer With Pellet Extrusion Capability

BigRep has announced the ONE.5X, a fully automated large-format FDM printer built on the company's proven one-cubic-metre platform, alongside a co-development partnership with Massive Dimension to bring pellet extrusion directly into its ecosystem.

The ONE.5X draws on more than a decade of large-format development and positions BigRep squarely in the production-adjacent space where part size, unattended run time, and material cost are the deciding factors for adopting additive manufacturing at scale. Jeff Olson, President of BigRep America, described the machine as representing "everything we've learned … as well as global customer feedback," a nod to the iterative refinements that separate the ONE.5X from its predecessors.

The Massive Dimension partnership centers on integrating the MDX pellet extruder into BigRep's platform. Pellet extrusion swaps spooled filament for granulated thermoplastic feedstock, which typically costs a fraction of filament per kilogram and opens the door to commodity resins and recycled materials. For shops printing large structural parts, jigs, or industrial tooling, that cost differential compounds quickly across a production run, making the economics of large-format additive manufacturing genuinely competitive with conventional fabrication.

BigRep is bringing the ONE.5X to RAPID + TCT 2026, running April 13-16 in Boston, where hands-on demos will be available at Booth #2355. The timing is deliberate: RAPID draws production engineers and manufacturing decision-makers evaluating additive technology for real workflows, not just prototyping benches.

The launch also reflects a broader industry pattern in which capability expansion happens through platform partnerships rather than fully in-house development. By pairing BigRep's automation stack with Massive Dimension's MDX extruder, the ONE.5X targets the sectors where build volume and recurring material costs have historically kept FDM at arm's length from genuine production adoption: automotive, architecture, and industrial tooling. Whether the combination lands as a production tool or an ambitious prototype will become clearer once engineers get hands on it in Boston next week.