LDO OTTOeject MK1 Automatic Build Plate Ejection & 3D Printer Automation System

Turn downtime into print time with the LDO OTTOeject MK1, an open-source 3D printer automation system designed to eject completed build plates, store finished prints, and load a fresh plate for the next job—all without waiting for an operator. Developed by OTTOMAT3D and manufactured as a premium kit by LDO Motors, OTTOeject helps transform compatible desktop 3D printers into more productive, unattended manufacturing systems. When a print finishes, OTTOeject removes the entire build plate with the completed part still attached, moves it into storage, and installs a clean plate so the next queued job can begin. That means fewer idle printers, less late-night plate swapping, and more output from the equipment you already own. Whether you are running overnight batches, producing customer orders, or scaling a print farm, OTTOeject offers a modular alternative to printer-specific automation. Its adjustable layout and plate-storage capacity can be configured around your available workspace, while support for both open-frame and enclosed printers—including automated door operation on compatible machines—makes it useful across a wide range of setups. The included OTTOengine software manages print queues and coordinates printers with one or more OTTOeject systems from a central interface. Load your jobs, prepare your plates, and let the system keep production moving while you focus on something other than hovering around the printer waiting for the last layer. Key Features Automatically removes and stores completed build plates Loads a fresh plate for the next print Enables continuous and unattended 3D printing Works with many popular desktop FDM printers Supports compatible enclosed printers with automated door operation Modular layout and expandable plate storage OTTOengine software for printer and job-queue management Open-source design by OTTOMAT3D Quality hardware kit manufactured by LDO Motors DIY assembly with extrusions, motion components, electronics, motors, power supply, and control hardware included Confirmed Printer Compatibility Tested printer models include: Bambu Lab: A1, P1P, P1S, X1C Prusa: MK3/S/+, MK4/S, CORE One, Switchwire Creality: K1C, Ender 3 V3 FlashForge: Adventurer 5M Pro, AD5X Elegoo: Centauri Carbon Compatibility continues to expand as additional printer configurations are tested. What’s Included The LDO OTTOeject MK1 kit includes the primary hardware needed to assemble the automation system, including: SKR Pico control board Aluminum extrusions Motion-system components Stepper motors Power supply Cable chain Electronics Fasteners and assembly hardware Printed parts, build plates, printer-specific mounting components, and other configuration-dependent items may be required unless specifically stated as included. Put your printer back to work before you are even awake. The LDO OTTOeject MK1 is built for makers, print farms, and small manufacturers ready to spend less time swapping plates—and more time shipping prints.