I have been melting down my silver for a couple of years and was doing a load of melts last week, everything was going well until I tried to do my wire ingots. I have never had any issue before but this time just when I went to pour the silver, the molten silver spluttered so had to stop and tidy up. This has happened every time since, when I’ve been pouring my wire ingots.
I use Mapp gas or my Aquaflame so the silver is definitely molten, it’s not a new mould and i put 3 in 1 oil down the ingot to coat it.
Does anyone had any suggestions as to why this has happened?