Hi3D Beta Now Splits AI-Generated Models Into Printable Parts

The Last Manual Step in AI-to-Print Workflows

AI-generated 3D models have gotten good at producing impressive shapes, but they still arrive at the slicer with two consistent problems: the model is too large for the build plate, or the geometry includes unprintable overhangs that need supports. Fixing either used to mean opening external CAD software, cutting the mesh by hand, and designing connector pegs or sockets to hold the pieces together after printing. That last step is what Hi3D's new Print by Parts beta removes.

Print by Parts is an automated segmentation tool built into the Hi3D browser platform. It splits a generated model into discrete, orientation-ready components, then places matching joints at each cut point. The pieces come out ready to load into a slicer individually, and the joints align precisely enough to assemble the final object without post-processing the geometry in separate software.

How It Works

The feature runs in two modes. Character mode handles humanoid figures and splits them into two to six parts: head, torso, arms, legs. General mode handles buildings, vehicles, and props. In both modes, you draw split lines across the mesh and the system labels each resulting section automatically.

Connector options include ball joints, rivet joints, and mortise-and-tenon joints. Each joint type has adjustable size, position, and fit. Once the splits and connectors are set, you can toggle an explode view to preview separated parts or an X-ray mode to inspect the joint geometry before exporting. Each part exports as its own printable mesh file.

What This Changes for Makers

The practical impact is on workflow time, not just convenience. A figurine or prop that previously required an hour of manual mesh repair in Blender before it could be sliced can now go from AI prompt to slicer-ready STL files in minutes. For Etsy sellers, prop makers, and prototype designers who run through multiple iterations per week, that hour adds up quickly.

Hi3D also tightened mesh output quality in this release. Generated models are described as cleaner and watertight, which reduces the file-repair work that typically precedes slicing. A multi-color optimization layer applies AI-driven color assignment logic to prepare assets for multi-material hardware workflows. The combination means fewer failed prints caused by bad normals or non-manifold geometry.

Pricing and Access

Hi3D runs entirely in the browser with no local installation. The free tier supports limited monthly generations under a CC BY 4.0 license. The Pro plan, which adds commercial rights and private asset storage, costs $7.96 per month with 1,000 credits and includes access to Print by Parts. That is cheaper than most subscription CAD tools, and considerably cheaper than hiring a modeler to prepare files for fabrication.

How It Fits the Market

Hi3D is not the only platform trying to close the gap between AI generation and physical output. Meshy and Tripo operate in the same space. Hi3D's differentiator is the all-in-one approach: generation, editing, splitting, connector placement, and slicer preparation all happen inside one interface. The trade-off is that the advanced features require a paid plan, and the learning curve on the connector system is not trivial the first time through.

For users who generate occasional characters or props, the free tier still gets the job done. For anyone producing print-ready models at volume, the Pro plan pays for itself in saved hours. Print by Parts is available now in beta for Pro users through the Hi3D Studio interface.