Fisheye appears as small, crater-like dips in the paint film, usually surfacing seconds after the coat goes on. It's almost always a contamination issue, not a product issue — something on the panel, in the gun, or in the air supply is rejecting the paint at that specific spot.
The most common culprits are silicone contamination (from waxes, polishes, or even a shop rag that once touched a silicone-based product), oil or moisture in the air line, and residue from a prior repair that wasn't fully cleaned off the panel.
Start by checking your air supply — a contaminated compressor line will produce fisheye across multiple panels, not just one, which is a useful diagnostic clue. If it's isolated to one panel, suspect surface contamination and go back to a thorough solvent wipe before any further recoating.
Fisheye eliminator additives exist and can save a panel mid-job, but they're a patch, not a fix — if the same job keeps producing fisheye, the root contamination source needsto be found and removed, not additive-masked every time.
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