My ceramic glazes keep developing hues that defy my recipes

I fire pottery as a hobby, and recently, my glazes have been coming out with colors not in my formulations, even with controlled kiln settings. It's reminiscent of a glitch in the matrix, so I started taking detailed photos of each piece pre and post-firing. This has allowed me to track minor environmental variables I previously overlooked, and I've noticed patterns on cloudy days.

2 comments

2 Comments

the_zara2h ago

Your note about patterns on cloudy days is REALLY compelling. What EXACTLY are the hue shifts, and are you logging barometric pressure or humidity in your workspace? I'm obsessed with the idea that ambient light could subtly alter glaze chemistry BEFORE it even goes into the kiln. Have you compared results from clear mornings versus overcast afternoons using the same clay batch?

elliot_bailey1h ago

Honestly, after years of potting, I've never correlated light with glaze shifts pre-firing.