Does anyone have some tips on how to make gold ingots that
don't have air bubbles in them and start to crack when you mill
is the alloy you are using. In 9ct, if you are using old chains
and things, forget it. If you are using casting grain, it needs
to be melted and poured (cast) and then melted and poured again
before rolling. New sheet and wire scraps should melt and roll no
bother at all. BUT, 9ct red is a nightmare! And so it goes on…
Also, you might find that using a closed mould helps.