TRIAXIAL GLAZE BLEND CHAOS

I’ve been making my own glazes for a while, including – once – trying a triaxial blend. This is a blend ‘on three axes’ or, in plain speak, ‘a big triangle of test tiles that varies three different ingredients’. This method is often used to explore core glaze ingredients, whereas I was interested purely in colourants, but the principles are the same. I tried it last year because I misread my notes and added a load of copper carbonate instead of cobalt oxide to a 3kg batch of floating blue. The amount – 30g – was too much to pretend it hadn’t happened. I could’ve just fired it on test tiles to see what it looked like, but it was a good opportunity to find out what other colours the glaze could make.

That time, I took out measured batches and added 1% cobalt oxide to one