Minecraft Autosmelter super compact + fast + quiet w/ minecarts! Full auto sorting + smelting! - YouTube
Auto Furnace with Minecart Minecraft Map
Auto-Fueling furnace bank - resource minimal! Minecraft Map
Minecart with Furnace – Minecraft Wiki
Making an industrial furnace using hopper minecarts, however only the circled furnaces are getting filled up by coal or stuff to smelt. The carts are definitely reaching the other side of furnaces