BOXES - For dirty glazes.
Boxes for dirty glazes: This system avoids mixing one glaze-base with another. Use three boxes, each one of a different color, the same color as its corresponding glaze container, so you know which is which. They measure about 30×25cms and are used to keep all the dirty glaze of each type that has been brushed and scraped off prepared pieces. Dirty glazes can have water added, be cleaned by passing them through a sieve and put back into the container to be used again.