With stained glass, you will want to start with your design on paper. Make sure there is some definition to your design and that the differently colored areas are outlined in a darker color. You may tape your design to the bottom of your glass so that it will remain in place during painting. Begin painting the dark outlines of your design with a tracer or rigger (long brush with a slender point). You will want your trace paint to be dark enough to block out light and provide contrast with your lighter colors. You must apply the outlines in long, smooth, continuous strokes. Do not try to "go over" your lines once they have dried (which does not take long!).
You will need several items handy to do stained glass painting. Obviously you will need paint and paintbrushes, if you cannot afford the specialized stained glass type you may be able to improvise with regular artist's paintbrushes. You will also need access to a kiln to set your work. Many professional studios will allow you to use their kiln for an hourly rate. Next, you will need a palette for mixing your paint. A piece of sandblasted glass is the most suitable choice for mixing you stained glass paints. A palette knife is a helpful tool in mixing the paint. The paints are made from a mixture of powdered oxides, gum arabic and water.
You can spend as little or as much as you want on stained glass painting tools and supplies. You can get started for as little as $20 to $100. You can save money by making some of your own stained glass painting equipment. Suppliers for stained glass paints and tools can be found by searching on the internet and at craft and supply stores. Be careful of the paints you choose because the paints for stained glass painting are specific.
Your work area does not have to be large. It could be an area set aside in your stained glass workshop with a good source of natural light from a window. You need plenty of storage including a palette box for storing the color palettes you make. You will need squares and rectangles of scrap clear glass, ground and rounded on the edges to prevent cutting yourself. These scraps will be for practicing your stained glass painting and tracing technique.
Armed with the knowledge you gain from sources and practice, you will find that there really is no mystery to stained glass painting.
Stained glass workshop safety tips
When carrying sheets of stained glass, wear gloves that help you have a good grip on the glass. The gloves should protect your hands from cuts from the razor sharp edges of the stained glass. Grip the glass on each side. Carrying it with one hand on top and one on bottom creates a hazard that the glass could snap in two. If you grip from each side and the sheet of stained glass breaks, you have a better chance of letting the glass slip away from you without being cut.
While grinding your stained glass, wear goggles that shield your eyes from all sides to prevent glass particles from getting in your eyes from underneath since the grinder is below eye level. It would also be a good idea to wear a paper mask to prevent breathing in the glass particles and dust that could be harmful to your sinuses and lungs.
Make sure that your area is well ventilated when you are soldering. Fumes from solder and flux contain harmful lead and acid. Solder scraps should be kept in a special container for taking to a recycler.
Common sense and a clean stained glass workshop will help keep you safe and add to your enjoyment of the art of stained glass.