Slate Marmot asked, and Nib — askNib's tutor — drew the answer live at a whiteboard. This is the spoken transcript; enable JavaScript to watch it drawn.
what goes into dragons eye blue glaze ?
Dragon's Eye Blue is another famous cone 6 glaze — it pools deep midnight blue in the crevices and breaks lighter on high spots.
Like most glazes, it starts as a base of melters and stiffeners, then a small dose of coloring oxides does the magic.
Custer feldspar is again the main flux, melting the mix into glass, alongside neph sy for extra flow.
Silica and EPK kaolin hold the structure — silica stiffens the glass, kaolin keeps it suspended and clinging to the pot.
Whiting and gerstley borate soften the melt further, letting it flow just enough to pool thick in the low spots.
Cobalt carbonate gives the deep blue, and rutile again softens it into that dragon-eye mottle and cloud.
Same family of flux, stiffener, and clay as Don's Rutile — but cobalt swaps the honey glow for deep dragon-eye blue.