Q＆A
Glass
After firing, it peeled off easily.
The firing temperature may be too low, so please increase it to a level where the substrate does not deform
There are different types of glass, and our products are basically intended for soda glass. For other types of substrate, please contact us.
I printed on glass using Gold paste for glass, but it appears strongly reddish when viewed from the back.
There are different types of glass, and our products are basically intended for soda glass. For other types of substrate, please contact us.
The glass coating may have an effect; however, any organic coating on the glass will be removed by preliminary firing, so please perform a pre-fire before use.
The color appears blurred.
The paste may be over-diluted, so leave the container open for a while to allow some of the solvent to evaporate.
The Gold is slightly thick and difficult to apply.
Solvent may have evaporated during long-term storage or leaving it standing, increasing viscosity. Dilute with Thinner, or stop using it if it has become gelatinous.
I applied Gold and fired it, but some areas on the surface are rough.
The surface of the substrate may be contaminated with dust, fingerprints, condensation, etc., before application. Clean the substrate before applying.
The Gold color does not develop properly.
The air flow in the kiln is insufficient, resulting in poor ventilation. Increase the air flow in the kiln to improve ventilation.
The temperature rise from 200°C to 400°C is too fast, so slow down the heating rate.
There may be too many items in the kiln, disrupting proper air flow. Reduce the amount of items and fire again.
After firing, the Gold peels off and flakes.
Surface contamination may be a factor. Clean the substrate before applying.
Thick application can make Gold peel more easily, so apply evenly and thinly.
On close inspection, fine pinholes have appeared in several spots.
Pinholes may occur due to moisture on the substrate surface. When moving items from a cool place to a warm place, invisible condensation can form on the surface. Allow enough time for the condensation to evaporate and the substrate to dry.
