Terracolor 689 Galena Effect From  £18.92

I did a few test tiles of this before firing it on a planter. The test tiles looked good and didn’t run. Put it on a planter (fairly thickly applied). It ran all over the entire planter - kiln shelf RIP - and it caused the whole planter to crack at the base, through the middle, all over disaster, basically. Going to try it on a plate next but it doesn’t look too good for now. It’s gorgeous and metallic but no good to me if it absolutely destroys the pot! Mixed 1000g:800ml as directed and fired to 1230C so all within range.

I applied 4 good coats of this glaze to cone 04 bisque and fired it to cone 5 with a 15 min soak and didn’t get any mirroring effect at all. It just came out a very glossy dark brown.
I may end up using half the pot on tests.😏

Amazing results but ensure not too thinly applied as it loses its metallic effect

It runs like crazy. I fire at cone 6 and can't really use it. If applied too thin, the sheen goes away. I have successfully use it on the edges of some bowels and mugs,