Add elegant accents to your art Use outlining pens to easily write and draw with Hanovia Liquid Metals, glass and enamels. Outlining pen has a regular point. Also available in fine point to establish smaller detailed designs, helping you to create one of a kind art! Delphi Tip: When you are ready to clean your pen tip we suggesting using turpentine. Then allow your pen tip to dry 24 - 48 hours. Projects are an example of detail drawings fired on glass. Fish Bowl by "Creative Designing: Innovative Glass Art." Necklace by Dianna Effner Porcelain Dolls, Inc. Hand painted bead by artist Brenda Miller. From Delphi's Online Artist Gallery.