Dekoser

To my knowlage these are just books, without lore, which you cant read. Image rooten books and blank one, bleached empty. They are still fine to fill bookshelved for look ~

if you hover over cobblestone(any type) it will show the materialtype, here stone; thats what will statisfy what the handbook calls for (dirt or stone) so if you have a room completely out of cobble, no opening to air and not bigger than 7x7x7 thats all good keep in mind that if you have a door that it has to be solid, like a solid wood door, and not the crude one another smaller modifier is sunlight; if sunlight reaches into the room it slightly reduces the cooling thats matter because doors may be solid but will still lets light go through artifical lighting like torches and laterns will be fine

create a normal fire with firewood and place the crucible in there like a cookingpot add the nuggets (not chunks)(not iron/nickel) into the cruicible; here you also mix the metals for alloying replace the firewood with a fuelsource thats hot enough to melt the nuggets: mainly charcoal/coal ignite and wait, the crucible will be hot and need tongs to work with pour the metal in the cooked clayform of your desire ~