Our glazes are manufactured by Bath Potters’ Supplies in England, who mixes the glaze powders from their own recipes.
Our glazes do not contain led or cadmium.
Bags and Labels
We strive to use wrapping/packaging which causes the least load to the environment as possible. We therefore recommend that our customers re-use the wrapping to the extent that it is possible.
Our glazes are all powder glazes and come in a bag lined with plastic to minimize the risk of moisture in the powders. We recommend that the glazes are kept in the bags until they are mixed. The glazes should be stored in a frost-free place.
Mix the glaze powder with water and run it through a 80 or 100 mesh sieve. We recommend that you strain the glazes twice.
When straining the glazes, you may experience a bit of residue in the sieve. The residue can be discarded, as it has been taken into account when mixing the powders.
We have suggested a mixing ratio, glaze powder to water, and in addition a suggested hydrometer value. Our mixing ratio is a suggestion, because there are many variables to take into account when dealing with glazes, and some of these will have an impact on the viscosity of the glaze. Some of the things you need to take into account, when mixing your glazes are:
- The porosity of the bisque fired pieces.
- The amount of time you leave your pieces in the glaze when dipping.
- Whether you glaze your pieces by spraying, dipping or pouring.
- Whether you dip your pieces once or twice.
Store the mixed glazes in airtight containers/buckets.
The firing temperature has a big impact on the glaze. Below, we have listed those of our glazes that change the most depending on the firing temperature.
- 9G0014 Honey, 9G0005 Light Green, 9G0006 Blue Grey, 9G0010 Spotted Brown and 9G0012 Opal Green become shiny and transparent at temperatures above 1260°C, and colour variations and effects become less distinctive. A slow cooling will make crystals grow bigger and the surface will have a satiny feel.
- 9G0025 Spotted Brown and 9G0008 Tenmoku are very suitable for higher temperatures.
As mentioned before, we highly recommend that you make your own glaze test samples before you glaze larger pieces. We encourage you to experiment with layer thickness and firing temperatures to see how the glazes behave; the results are always exciting. Be mindful of running glazes, though. And don’t forget to take notes!