Infernal Furnace

Creation
The Infernal Furnace is one of the mutliblock structures of Thaumcraft. To create it, a 3x3x3 area must be cleared where the furnace is to form. Place nether bricks on the corners of each y-levels. On the first y-level, place five obsidian in a plus formation. On the second, place an iron bars on the side that will be the front, three obsidian blocks on the other three sides, and a lava source in the center. On the third, place obsidian blocks on the sides but not in the center, leaving a gap for item to be dropped into. Once completed, a simple tap of the wand will form the furnace, assuming the wand has the required 50 Ignis and Terra vis.

Use
To use the furnace, items must be dropped in from the opening in the top. The furnace will check that the item can be smelted in a normal furnace and then spit out the resulting items from the front. Use of a hungry chest makes pick-up easy. Centered on each side of the furnace are holes. The holes on the three sides are for Arcane Bellows, which will increase the speed at which the furnace smelts items, thought not by very much as this is a passive process. The hole on the bottom is for inputting Ignis essentia to the furnace. In past versions of Thaumcraft, it was merely enough to have a jar of essentia somewhere in front of the furnace for it to draw from, although that has changed, as the player must now pump in essentia through the use of vis relays or essentia tubes.

The furnace's most notable contribution, despite being the only fuel-less furnace in the modpack, is that it has a chance to spit out nuggets of the ore being smelted. This chance goes up if the player inputs native ore clusters instead of raw ore.