iotuegli wrote:make iron tools reciclable by burning them like ores in smelters, every single item will give 1 iron bar.
that's of for swords (only 1 metal used, only 1 recicled) but a bit expensive for pickaxes or other civilian stuffs.
make nails smeltable too, they add 20% to the iron bar, so 5 nails (1 iron bar) will return in 1 bar
that could be a way to "transmutate" copper in iron but you can add 1 more item with the same effect as our nails: copper nails
maybe some recipes or buildings just for that kind of nail
But in RL if you smelt 1kg from pure iron scraps you get 1kg iron bar?