Well, im always into making stuff that definitely should be in vanilla minecraft, so I made this seamless redstone contraption and im pretty proud of it! So I decided to send it to the world. So here it is! It works in 1.9 aswell using the new chorus blocks so you can use this mcedit schematic and upload these 4 schematics, yup, you are probably guessing that I can't fit that in to one schematic and that's true so here are 4 schematics for each, crafting the items, and the smelt items, the smelt enchantment goes up to a level of 3 and to get the smelt enchants you have to do this in order! First throw down 5 items down on the same block which are: Diamond Pickaxe, Diamond Axe, Diamond Shovel, Nether Star, Lava Bucket. So these guys are end game stuff. You can upgrade them by having 30 levels and holding them in your hand, so if I had a Smelt I and I had 30 levels I'd upgrade to Smelt II and then if I had Smelt II and I had 30 levels I'd upgrade to Smelt III. So yeah, have fun! Here are the rest of the components. 

Smelt1

Smelt2

Smelt3