Thick, pasty outliners create raised barrier lines that control where translucent colors flow, essential for authentic cloisonné and stained glass effects. Pebeo Vitrail Cerne Relief maintains consistent dimension as it dries, forming permanent ridges that contain subsequent color applications within precise boundaries. The paste-like consistency holds its shape on vertical surfaces without sagging or running, whether you're outlining intricate Celtic knots on glass or defining geometric patterns on ceramic tiles.

Each 20ml tube features a fine applicator tip that lets you draw controlled lines from delicate filigree to bold borders. The thick formula responds to varying pressure, flowing steadily for uniform lines or building up for more pronounced relief. Air-dry convenience eliminates firing requirements, outliners cure to permanent adhesion in thirty minutes, ready for Pebeo Ceramic or Vitrail colors to be applied between the raised lines.

Works across glass, ceramics, metal, and wood. Artists creating faux stained glass panels use these outliners to mimic traditional lead came, while ceramic painters rely on them to prevent glaze colors from bleeding together during application. The raised lines remain tactile after curing, adding dimensional interest that catches light and emphasizes your design's structure.