Kossel Pro 3D printer endstop screw mounts v2

thingiverse

When I purchased the Kossel Pro 3D printer, one of its glaring shortcomings was the inability to adjust endstops. Instead, the system relied on a Z-probe to level the print surface. However, due to slight imperfections in the geometry of the Kossel Pro, the Z-probe could move relative to the print head, leading to inaccurate calibrations. To address this issue, I designed an adjustable endstop system that allows users to precisely control the distance between the print head and the bed. This system consists of a series of screws that can be turned to adjust the height of the endstops, ensuring accurate calibrations every time. The process of adjusting the endstops is straightforward: simply turn the screws clockwise or counterclockwise to increase or decrease the distance between the print head and the bed. The system also includes a built-in limit switch that prevents the print head from moving beyond the calibrated position, ensuring safe and accurate printing. To calibrate the endstops, follow these steps: 1. Home the printer by moving it to its initial position. 2. Turn the screws clockwise or counterclockwise to adjust the height of the endstops until the print head lightly holds down a piece of paper at the center of the bed. 3. Verify that the print head is level and properly aligned with the bed. 4. Repeat steps 2-3 for each axis (X, Y, and Z) to ensure accurate calibration. Once the endstops are calibrated, the printer will be able to accurately track its movements and produce high-quality prints. The adjustable endstop system also makes it easier to adjust the print head's position during printing, allowing users to achieve complex prints with ease. I have attached a detailed guide on how to assemble and calibrate the adjustable endstop system, as well as a sample configuration file for Smoothieware users.