So, Things were going pretty well, have gone through 3-4 rolls of filament with no failed prints; however, a few days ago I started having problems with the first layer. See attached photo:
SO I learned how to see my bed levelling mesh and it looks symmetrical but warped like a pringle
Any suggestions?
Z-offset is a little low, 0.05-0.1mm my guess, adjust it should get rid of the ripples.
Rokhawg, is that PLA? If so, try PETG - will likely find the K2+ much more finnicky about Z height and bed flatness for PETG.
Pull the build plate and you’ll see four silver screws. Hold the tops stationary with an Allen (hex) wrench and reach under them and turn the thumbscrews. This is the manual bed leveling adjusters. Screw in to lower position, screw out to raise position. May find they are all screwed all the way in. There is a way to do this with a feeler gauge… but if you don’t want to do that, make an adjustment, clean everything meticulously, and re-do bed calibration only. Repeat. To get out some of the “taco” on mine, I added strips of kapton tape to the edges of the magnetic surface. Once the four corners are at the same height (it will never be perfectly flat) then power-cycle the machine to force it to use the latest data. This alone may be perfect for PLA (taco is problematic for PETG here.)
I’m not sure, but Klipper seems like it could be doing some sort of moving-average when it comes to Z offset and bed flatness, over many sample sets. So making one major surface change (like a high corner) may take many recalibrations to filter down to a stable internal Z offset. Stable may still need a user-supplied Z offset in the software’s printer setting. Finnicky!
