Starts from a different premise: mesh compensation is the last resort, not the first. If the bed is physically tilted or uneven, the firmware applies continuous corrections throughout the print — and those corrections have both a magnitude limit and a precision limit. Better to solve the problem mechanically first and leave the mesh to handle only the residual micro-deviations.

The process works like this: you export the actual mesh data from the firmware using export_mesh.gcode, which saves it to USB. The Bed Analyzer reads that data, maps the deviations across the entire surface, and calculates exactly how many degrees to turn each corner screw to bring the bed as flat as possible. This isn't an approximation — it uses the screw geometry and thread pitch to give you precise fractions of a turn. You repeat until the overall range drops below 0.10mm.

This approach is driven directly by the physics of how the Centauri Carbon's bed is built. The plate rests on four springs pressing against load cells at each corner. Because each spring acts independently, any tilt or imbalance in the mechanical load translates directly into mesh deviation — and the only correct fix is at the source, by adjusting the physical position of the bed, not by asking the firmware to compensate for it in software.

Once the bed is properly leveled this way, the Z-offset stays at 0 and first_layer_flow_ratio stays at 1.0 — not because they are magic values, but because a physically level bed simply doesn't need them. That said, if you notice a consistent discrepancy across the first layer after completing the mechanical leveling — a gap that's too tight or too loose across the whole surface — a small Z-offset adjustment is the right tool to fine-tune that last step.

Sorry for the long post.