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Painted wine glasses

Painting on glass, mirrors or tile can be tricky. Before you begin, you will need to prepare your surface by using Jo Sonja Glass & Tile Primer (Part A). It prepares glass, glazed ceramics and enamel for painting, providing additional bonding for the paint. Jo Sonja Glass & Tile Medium (Part B) can be added to Jo Sonja Matte Flow Acrylics to make them suitable for painting on glass, glazed ceramics and enamel. It should be used in conjunction with Glass and Tile Primer if items cannot be cured in the oven. It is essential for use on painted items which are too large or otherwise unsuitable for heat setting in an oven and should be used in conjunction with Glass and Tile Medium (Part B).


  • Using a clean brush, apply a generous amount of Jo Sonja Glass & Tile Primer to a clean dry surface to prepare it. Allow to dry. A blooming or cloudiness may be evident on glass after application. This is normal and can be buffed off when your designs have cured.
  • If preparing the inside surface of a glass container (e.g, a decorative Christmas ball), the Primer may be poured in and swirled around to coat the interior surface. Drain thoroughly and allow to dry.
  • Paint as per instructions below.
  • Note: Glass & Tile Primer is flammable and appropriate safety measures should be followed.
  • Apply a liberal coat of Jo Sonja Glass & Tile Medium to area to be painted and allow to dry. (This step is optional, however will promote better adhesion of painted design to surface.) For maximum adhesion, there must be adequate Glass & Tile Medium in contact with the surface.
  • Thoroughly mix color with Glass & Tile Medium beginning with a ratio of 1 part Jo Sonja Artists’ Colours to 3 parts medium.
  • Use Glass & Tile Medium in the brush for floated color and glazing. Do not dilute with water or other mediums. The addition of other mediums may decrease the adhesion of paint to the surface. Rinse brush when paint begins to drag. Dress brush in a small amount of Glass & Tile Medium and pinch wipe to remove any traces of water.
  • To reduce transparency, layer color or decrease ratio of medium to color. If medium is decreased or for increased durability, apply two coats of Glass & Tile Medium over painted area when complete. Dry well between each layer.
  • For maximum durability, finish with 1 to 3 coats of Chroma’s Jo Sonja Polyurethane Water Based Gloss, Satin or Matte Varnish.
  • Allow painted items to cure for a minimum of two weeks before use.
  • TO HEAT SET: Place decorated articles in a cold domestic oven and set temperature to 165°C or 330°F. (155°C if gas or fan forced.) When temperature is reached, maintain for at least 45 minutes. DO NOT REMOVE UNTIL COOLED. (NB: A hair drier is not sufficient to heat cure article.) Varnish after heat setting.
  • TO ENSURE DURABILITY OF DESIGN: Avoid use of harsh cleaning agents.
  • While remarkably durable, this system is for decorative purposes only. Carefully hand wash and avoid harsh abrasives or chemicals.

Jo Sonja’s Artists’ Colours Tutorials

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