: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:
Suggestion: Pocket Grill
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Like carry it on your person? Wouldn't that get a little...warm?
Anyhow carry an electric furnace, a wrench, and some batteries.
I find I never use a furnace that way, and if I need a furnace when I'm away from my workshop I make a stone furnace.
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Some "extended 2x2 crafting" mod had a portable oven which could only cook food
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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.