Dichroic Glass Information
Due to the highly reflective surface of dichroic glass, a realistic reproduction of the color in a photo is very difficult. The images should be considered an indication of the actual color, but can never be taken as a direct reference.
The product images are taken from two different angles to show the different reflective properties.
In the image, the top left of the photo was taken at a 90° angle. This is the colour you get in transmitted light (or the direct reflected colour in the case of a black coated glass).
The bottom right was taken at a 45° angle, which shows the colour in reflected light.
CBS Dichroic Sheetsize:
CBS Dichroic sheets are cut in circles with a diameter of 48cm. Some sheets (usually the textures) will have an edge removed during production.
What is Dichroic Glass?
Dichroic glass is a multi layer coating placed on glass by using a highly technical vacuum deposition process. Quartz Crystal and Metal Oxides are vaporized with an electron beam gun in an airless vacuum chamber and the vapor then floats upward and attaches then condenses on the surface of the glass in the form of a crystal structure.
Dichro glasses have 30 layers of these materials yet the thickness of the total coating is approximately 35 millionths of an inch (1,4 millionths of a mm). The coating that is created is very similar to a gemstone and by careful control in thickness, different colors are obtained. Thus, all the coatings are created using the exact same materials.
Originally created for the aerospace industry, dichroic glass is now made available to the artist community.
Dichroic glass is specifically designed to be hotworked in any way but can also be used in its raw form. The main characteristic of Dichroic Glass is that it has a transmitted color and a completely different reflective color. Furthermore, these two colors shift depending on angle of view. With the play of light together with its vibrant color, dichroic glass is a prime tool used to add interest to any piece of work or project.
What does the colour name stand for (i.e. Cyan/Copper)?
As noted above, every glass shows different colours, depending on the angle of light.
In dichroic glass with a clear base the first colour is what you see in transmitted light, the second one visible in reflected light.
Because of the exact same coating, the black base glass are named the same way. Here although only the reflected light can be seen.
The only restricition in kiln working with dichroic glass is to choose the dichroic glass with the same COE-value of your base glass. The coating has no effect on the firing cycle.
Cutting dichroic glass
The coating does not affect the integrity of the glass in any way. We recommend that you cut/score the glass on the "uncoated" side of the glass substrate. This will produce a much smoother and cleaner break.
The dichroic surface is stronger than the glass that it has been placed onto. The final layer is Quartz Crystal (this material is almost as strong as an actual diamond). But, because it is so extremely thin, if something can scratch the glass, it will usually also scratch the coating. We do not recommend using abrasives such as steel wool, etc.
Also, when grinding the edge of the glass, the coating will chip off along the edges. We recommend using a fine grit grinding wheel when trying to keep chipping to a minimum.
Never soak dichroic glass in water. The acidity of water etches the coating off.