We have seen many different firing programs but in our experience the firing program used for your specific kiln will work best. That being said…
We want to start out by saying every kiln is different. We HIGHLY recommend testing your decals before committing them to your final project.
What do we mean when we say all kilns are different?
Aside from the major differences such as gas kilns, wood kilns, electric kilns etc… there are subtle nuances that can affect the overall quality of the firing. We strongly recommend firing decals only in electric kilns. The atmosphere created in gas and wood kilns can effect the quality of the decal, as well as the temperature fluctuations can be hard to manage, also affecting the quality of the decal.
Examples of subtle differences in electric kilns:
When our heating elements are new they fire ideally. However as they age the firings can become longer as the heating elements take on more wear and tare.
The size of the kiln and the capacity in which it is filled can also play a role in the successful application of your decal. These factors can all affect subtle temperature shifts and firing times. So test your pieces to gauge what temperature will give your decals the desired look.
We typically prefer cone 017 (1360F) to fire. However, these decals can go as high as cone 012 (1582) without any burnouts in color.
A large factor to consider is the glaze we are using. Our printers do not print white therefore we recommend applying the decals onto a white glaze. Glazes can be quite temperamental. Depending on the type of glaze used, the decal could begin to soften. This could cause off gassing, which could lead to pinholing in the glaze (or other undesirable textures and appearances). Testing is so important because one glaze may be fine at cone 017 and not cone 012. For example, the white we sell becomes rough, bubbly and scaly at cone 012 but is fine at cone 017, cone 016 or cone 015.