Glass paint and decoration for fused glass jewelry can be applied in several ways. Using lead-free opaque and transparent enamel powders is one of the main techniques used today.
The colors can be mixed, which means that a particularly wide color palette is available.
They are not enamels in the normal sense, but finely ground glass particles with a low melting point, which after being applied are fired in a glass melting furnace so that the enamel fuses to the piece of jewelry. You can buy the glass enamels for painting through https://www.artglasssupplies.com/glass-paints.
Care must be taken when handling glass enamel to ensure that the particles are not inhaled, as this could lead to serious lung disease. A respiratory mask and good ventilation are strongly recommended when handling these powders.
Dry enamel powder is applied by placing the powder on a small sieve and then sifting it over the glass or applying it with a brush. Stencils or tape can be used to mask areas of the glass. A texturing tool can be used to produce patterns on the glaze.
Sifting the dust over objects held on the glass can produce interesting patterns. Fine combs or fine mesh are some of the items you can use.
Several firings may be required to produce different layers of color and ensure color fixation.
Enamel powders can be applied wet by mixing them with a water- or oil-based paint medium. Water-based media are easier to clean; the important thing is that the medium does not leave any residue after cooking.
Wet enamel is applied by brush; Normal craft paintbrushes are suitable for this. Rubber stamps and sponges can also be used with wet enamel to produce special effects. Glass bead makers can roll their hot beads through the enamel powder and take on a layer of color.