A pattern bar is the result of fusing together different colors of glass into a thick bundle.
Once fused they are then cut to create colorful fused glass patterns that can be added to other projects to achieve a consistent pattern.
This generally forms a bar of glass, which can be any shape desired.
These forms can vary in size, but is typically only one to two inches wide, an inch thick and about three or four inches in length.
After these bars are fused, they can be sliced into small pieces with the help of a trim saw, lapidary saw or glass saw.
These colorful glass patterns can then be re-fused to create other items.
When constructing these bars, keep in mind that you must use compatible glass, and annealing will be longer because of the thickness of this project.
If you want your pattern bar slices to be consistent then your pattern must extend to the full length of the design, but, they don’t have to have a constant design.
Be creative and add a lot of color to achieve a random designed bar.
These bars are similar to mosaic cane that glassmakers in Italy form using various techniques involved in lampworking.
The best known of these canes is probably the ones involved with Millefiori, which are sliced and placed into fusing projects.
There are various methods for making Pattern Bars.
Check out the information below to see which method may appeal to you.
A stainless steel mold or ceramic mold is generally used for holding the glass.
Line the mold with fiber board, so the glass does not stick to the mold during the high firing temperature.
This method allows for more creativity in your design.
Various the size and design of your strips and add rods, stringers or frit to achieve intricate unique designs.
Place the glass together in the desired design.
Put the mold into your kiln.
Full fuse the glass, and then slowly anneal and finally cool the bar.
Cold bundling can be used to form these bars.
This method can be achieved by cutting consistent strips of fusing glass.
The strips I cut were 12 inches long and 2 inches wide.
Stack the strips in any color pattern you desire.
These are then placed on a prepared kiln shelf making sure that the edges are even.
Taking the kiln up to a tack fuse at approximately 1300 degrees Fahrenheit and holding for about 10 minutes, will allow the glass to adhere together without them distorting the shape.
Make sure you anneal this thick slab before returning to room temperature.
These colorful unique bars are unique ways to add accents or other features to glass projects.
They can even be used by themselves to create projects.
I sliced up my pattern bars and then used them in a flow bar technique to achieve a couple of plates.