Answer
Aug 15, 2023 - 08:00 AM
Counter enamel is used to prevent metal warping. This can happen due to the high temperature of the kiln, causing cracks in the enamel. Apply a layer of counter enamel to the back of your metal beforehand to create equal stress on both the front and back of the piece. Counter enamel can be applied using sifting, wet packing or with liquid enamel. Thinner and/or larger pieces are more like to warp, as are flat pieces rather than domed pieces.
Taking this into account, we suggest:
- 1mm or lower should be counter-enamelled
- 1mm-1.3mm may need to be counter-enamelled, depending on size and shape
- 1.3mm of thicker does not usually need to be counter-enamelled