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I've printed hundreds of prints over a few years. Now I haven't printed in a few weeks but this is the first time I've had a problem like this. This is supposed to be flat. What's happening?
Bonus video: https://drive.proton.me/urls/74XZH4FVSM#1QqSvXK3MJCF
The audio might be a clue for you to help me troubleshoot
Check your z offset, first layer squish and extrusion multiplier, then pressure advance.
That looks like too much filament or too close to the bed. Some of the edge artifacts could be pressure advance as well.
I spent a year chasing those problems out of a printer, and had hundreds of FL tests that looked just like that.
If you're interested, Ellis 3D tuning guide is amazing. (I use a different pressure advance calibration method, but the rest has been bang on for me...)
Which pressure advance calibration do you use and why?
I tried the ellis3d model and while I hadn't got all my start macros together, first time I ran it I crashed the nozzle into the bed and gouged it.
Later attempts with a 0.6mm nozzle also gave me inconsistent and hard to read outcomes.
Instead, I use this two box method on opposite corners of the front of the bed:
https://forum.vorondesign.com/threads/how-to-confirm-your-pressure-advance-value-is-correct.23/
Since then, coupled with the rest of the ellis3D tuning guide, my printer has been DIALLED....