polyurethane casting resin has a very fast curing time and becomes an opaque white finish while epoxy resin is crystal clear after curing

then protect your project with a water based clear coat

Clean the glass surface carefully with water or even better Solvent

after long tests and improvements

Media / Alcohol ink Vanilla akrylpennor polyurethane casting resin has aProduct description: Pentart media ink is an acid free alcohol ink that is used to create effects on glass, ceramics, yupo paper and several other substrates as well as coloring resin. A quick drying, waterproof alcohol that mixes well with each other and creates transparent transitions between different colors. Suitable for various techniques such as drip technique, effects in resin, mixed media etc. Can be mixed with Pentart media ink diluent or