Ender 5 Modified to H-Bot Ender 4

thingiverse

This is a high-tech 3D printer known as an H-Bot (H-Frame).\r\n\r\nInstructions on how to convert your Ender 5 into an Ender 4-style H-Bot gantry by adding onto its existing frame using the RepRap method for printing necessary parts are provided in this file.\r\n\r\nThe H-Bot is a two-axis linear motion stage that features stationary stepper motors, resulting in a lightweight end-effector (or nozzle) capable of high speeds and accelerations without significant vibration errors. However, the H-Bot has one major drawback: a parasitic torsional motion occurs when commanding high accelerations along the bridge axis (x-axis here). This issue is solved by alternative configurations like Core XY but they are more complex to implement and also have their own flaws such as variation in belt tensions creating errors.\r\n\r\nResearchers at the University of Michigan developed a software algorithm that mitigates H-Bot errors, allowing for faster printing speeds without large accuracy errors.\r\n\r\nThis upgrade retains the base parts of the Ender 5 but modifies its gantry to a parallel-axis configuration making it efficient in terms of productivity and accuracy due to stationary motors. To clarify, only the top gantry is altered; everything else remains unchanged.\r\n\r\nThe complete Bill of Materials with links to purchased parts can be found in the attached PDF (in "Thing Files").