Hi folks,

I've a piece of silver sheet 0.8mm thickness. I've annealed it a couple of times before with no problems but when I annealed it today - it cracked.

I did everything as normal, moved the flame slowly across the surface, didnt even get it to glowing red and then waited a couple of seconds before putting into the quench. The quench was room temperature water. Everything just as I've done it before.

Photo below shows what has happened - its fractured in several places but one is huge and completely ruined the sheet.

any ideas? Its never happened to me before
anybody have this happen to them?
Did I do something wrong?
Was the silver faulty?