BabyBeltPRO Build Update: The First Print Test Is Live

A belt printer reaches the critical first layer

The BabyBeltPRO build series from Canuck Creator hit its first print test in a new livestream sponsored by LDO Motors. The project is a V2.5 open-source belt printer designed by Rob Mink and the Printcepts team, with kits now sold through LDO and West3D.

Belt printers trade a fixed build plate for a moving canvas. The print surface advances continuously, so parts can be taller than the machine itself. That opens up long cosplay props, architectural models, and industrial fixtures that would otherwise need a much larger frame. The tradeoff is first-layer consistency across a flexible substrate, and that is exactly what Canuck Creator tested in Part 4.

The build uses a minimalist hardware philosophy. Printcepts avoids exotic fasteners wherever possible. The V2.5 revision swaps to a single Y linear rail, adds a stronger bed tension system, and improves wire routing compared to earlier versions. Klipper runs the show, with community-funded belt support still making its way into OrcaSlicer.

Why the BabyBeltPRO still matters

Entry-level 3D printers have converged on a boxy Cartesian design. Most buyers accept a fixed build volume because it is simple and cheap. Belt printers offer a different answer: infinite Z without infinite floor space. The BabyBeltPRO targets makers who want that capability without the complexity of a custom industrial rig.

LDO Motors sponsorship means the build uses proven drivetrain components. West3D sells a complete kit with all fasteners, a custom toolhead board, and even a hand-welded belt. The GitHub repo remains the central resource, with documentation for Klipper mods and community-maintained printable parts.

The livestream also ran a Polymaker filament giveaway and highlighted VisionMiner bed adhesive, but the core content is the print test itself. Viewers get to see how the first layer behaves on polypropylene, where the belt tension sits after assembly, and whether the Klipper configuration holds up under real extrusion. For anyone considering a belt printer build, that is the data point that matters most.