:Alloy:The idea is that you have an electric furnace carryable with you. On building projects I dislike having to go back to collect smelted stone. Recipe:
As I understand it, the op was out buildign some large structure (maybe a castle) out of smooth stone/bricks. While he was out, he underestimated how much stone he would need, and wanted to smelt up more while he was out. All I can say is Induction Furnace and a PC full of cobblestone.