This mender works very well. I’ve been able to seal deep cracks, I had a clay person whose arm cracked at the shoulder and hand lifted from her hip, and after putting some on for a few days, glazed it and the arm held firmly, without any issues. You can’t tell it was used. No color changes where it was used.

A thick student wheel piece broke in the bisque firing. I used this to glue the pieces back together and then glazed it. The only way to tell it was broken is the line of clay mender along the seam on the bottom. Works quickly!

I haven’t tested it yet.