Minecraft wiki entry for Automatic_smelting, associated text: 1 Semi-automatic furnace
1.1 Build instructions
1.2 Videos
2 Automatic item Sorting furnace
3 Tiny fuel generator
3.1 Charcoal
3.2 Bamboo
4 Large smelters
4.1 Mumbo Jumbo's design
4.2 ilmango's design
4.3 Mysticat's design
4.4 1man1game's design
4.5 JC Playz's design
5 Video