When printing on my Ender 3 Max Neo (stock except for a PEI bed), the right side of the bed is always printing too close. I manually leveled the bed, and then I run the auto-leveling sequence. I also have it set to run auto-level before every print, and confirmed that it’s enabled using M420 S1 after the G29 in the opening gcode.
I also disabled it in one test with M420 S0 and confirmed that it is making a difference so it appears to be working, but the auto-level map seems to be incorrect every time. Any ideas?
What kind of probe? Are you preheating before auto levelling? Have you manually calibrated an offset? I used a sheet of paper which was good enough to rough it in and then fine tuned from there. Have you followed marlin’s bed levelling steps?
G29 S0should return mesh results, plonk the reaults of that into a visualisation tool of your choice if you don’t have the ability to visualise with your printer interface (klipper does and if I recall so does octoprint) to help see if you need further adjustment. Definitely do your mesh levelling at your expected print temperatures, give it a good heat soak of like at least 15 minutes before testing, preferably longer but good enough is usually fine.How did you manually level? I ended up doing a silicone tube mod on my prusa to get the build plate as level as possible,
now within ~0.1mm deviation over the build plate at 90c which is definitely good enough for me. I also moved from a pinda probe to a tap probe, induction probes are definitely fine imo, you just need to tune the offset
The bed leveling is done with the bed and nozzle preheated to printing temp. As for the probe, it’s the stock probe on the Ender 3 Max Neo.
The interesting part is the heat soak. I typically heat it and then only wait a minute or two. I’ll let it sit for a while and try again.
To be fair, I only find it needed on stuff above pla, and even then it’s often good enough to preheat first, changed my start gcodes around to preheat before mesh levelling.
Not sure if creality has a macro to calibrate the z axis, totally possible there’s a bit of skew across the x gantry, running the z axis just past its max usually sorts it on my franken-prusa, trying to adjust bed levelling with skew is a mess and made it look like the entire bed was going downhill.