Read first-layer signals

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A visual guide to identifying a too-high, too-low, and dependable first layer.

The problem

The first layer is separating, scraping, or inconsistent.

Why it happens

Bed condition, nozzle distance, leveling, and material preparation can all affect the first lines.

How to fix it

Watch a compact first-layer test, stop early when it is clearly wrong, and adjust one relevant variable.

Settings to try

Use a slow first layer Review the bed mesh Keep the build surface clean