Overview of using oil paint pens on float glass and what it looks like after fusing.
Paint Markers
Oil based markers for glass
Posca Paint Markers
How to Create a Reverse Painting on Glass (with Pictures)
Uni-Posca™ 5/16 Medium Marker
Sharpie Water-Based Paint Markers are water-based, opaque, valve-action paint markers with vibrant colors that stand out on both light and dark
Water-Based Paint Markers
5 Best Paint Pens - Jan. 2024 - BestReviews
Teen Arts & Crafts - Stained Glass with Permanent Markers
Glass Pen Liquid Paint Marker: Glass Writing Pens and Painting Markers with Washable, Erasable Ink - Windows, Mirrors, Signs, Crafts - 2 Pack, 5mm Narrow and 15mm Wide Tip Pen