print quality - What causes ripples on part of first layer? - 3D Printing Stack Exchange

I'm having issues with ripples on the first layer of big flat prints. The initial corner of a big flat print is fine, but then ripples begin to form as shown in the screenshot. I'm just a newbie

print quality - What is causing 'droplets' on first layer? - 3D Printing Stack Exchange

3D Print First Layer Ripples - Ankermake US

Weird ripple effect on first layer (MK3) – How do I print this? (Printing help) – Prusa3D Forum

print quality - What causes ripples on part of first layer? - 3D Printing Stack Exchange

Why are there ripples on my first layer? (It's perpendicular to the print lines) : r/3Dprinting

3D Print First Layer Ripples - Ankermake US

Rough surface when printing - 3D Printing Stack Exchange

I keep getting this ripple effect in the first layer of my print. : r/FixMyPrint

Any ideas what would cause these ripples? : r/3Dprinting