Side view of a grey volumetric race track inside a 3D printer's enclosed build volume, on top of a PEI build plate. The print is fairly tall, and has no under-extrusion, or extrusional inconsistency of any kind, at all.
https://assets.chaos.social/media_attachments/files/112/579/754/498/782/702/original/43edfae064324c46.jpg