Ender 3 (Pro) Dual-Z X-Gantry Calibration Tool

thingiverse

If you're converting your Ender 3 (Pro) to a Dual-Z setup, don't forget the final step. The X-Gantry needs to be level with the printer's frame to avoid skewed results. There are ways to achieve a level X-gantry. Some people measure from the bottom, others from the top. I found using the top bar as a reference point worked best for me. Calibrating the X-gantry that high will immediately show if the rods are banding. If it works smoothly there, it will work perfectly at build plate level. Instead of constantly measuring the left and right sides, I wanted a faster method. Here's what I came up with. The calibration tool is a sturdy frame with a clamp that snugly connects to the X-Gantry: Print two copies. Place one on the left side and one on the right side. Bring the X-gantry up until one side (ideally both) touches the top bar. If one side is off, unhook the belt and adjust the rod until it matches. Once both sides connect flat, tighten the screws and start printing.