Ender 3 Pro Bed Level Test + Calibration Wizard
Description
# This is the *one file* I keep on my local SD card on my Ender 3 Pro to quickly and easily calibrate and validate the print bed level for a critical job. This GCODE will bring your extruder to the home position, and wait for you to level the bed with a piece of paper. (You should feel very slight friction between the bed, paper, and extruder tip - and it should be able to slide without too much difficulty.) Once calibrating the first corner, you tap on your Ender 3 Pro console button, it will proceed to do the other three corners. This will happen on all four corners three times. (Please note: each time you tweak a corner it slightly affects the others, hence your last round of calibration should ideally have no changes.) The printer will then do a test print to help you verify the bed is a) level and b) flat. (Please note: this GCODE uses temperatures specifically for PLA - 210/60 - so modify accordingly for other filament types.) 1.) a curved skirt - to see consistent filament flow across the whole print bed. 2.) a 1.5cm filled circle for each of the four corners as well as the center of the plate - to ensure a flat bed. (Note: if your bed is not flat - leveling will not fix that - but using the Marlin Firmware’s mesh bed leveling will dramatically improve, or even resolve it. Learn more about that via Michael on ‘Teaching Tech’ here: https://youtu.be/mAU7cIZ0Hns) This is a remix of ‘Ender 3 Level Test’ by elmerohueso (https://www.thingiverse.com/thing:2987803) with two key changes needed for the Ender 3 Pro: 1.) a cold (versus hot) extruder during paper level calibration - to prevent any damage to the soft magnetic peel-able bed of the Ender 3 Pro. 2.) three rounds of level calibration, versus two - to ensure at least one round of calibration serves as proper leveling validation without adjustment.
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