Here is the paper to avoid whe using posca markers for your artwork or, Posca Markers

POSCA Fine PC-3M Art Paint Marker Pens Gift Set of 8 Warm Neutral Tones Drawing Drafting Poster Markers Glass, Fabric, Metal Paper - Sweden

Do y'all know what these chunks that come out of posca markers are, or why it happens? Thanks. : r/graffhelp

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EASY Posca Paint Pens PRO TIP for Mind-Blowing MIXED MEDIA PORTRAITS - KAREN CAMPBELL, ARTIST

The set of 16 markers includes the colors Black, White, Red, Yellow, Blue, Light Blue, Green, Light Green, Pink, Orange, Violet, Brown, Beige, Grey,

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EASY Posca Paint Pens PRO TIP for Mind-Blowing MIXED MEDIA PORTRAITS - KAREN CAMPBELL, ARTIST