EasyBake Oven added, new Item ID's, some recipe removal (vanilla furnace), some new recipes, poor attempt at getting axes to take damage when making planks/sticks.
Simply this: for progression. The first furnace only smelts basic stuff like copper, tin, gold, etc. Next one includes bronze, brass, and everything the first one can do. 3rd is for iron, 4th for steel, 5th (to be made) for the rest of the stuff (uranium, titanium, tungsten). Easybake oven is for food only. Each furnace requires the one before it so it's pretty obvious :).
You certainly can. There's forge ore dictionary stuff already so it will work with the entire Minecrack Pack (been tested with that as of 0.2.0). ISided coming eventually (BC pipes compatibility)
Plastic ore spawns in dirt. There's a small chance when digging dirt to get a plastic chunk.
First you must turn it to copper dust (temp recipe is just shapeless with the ore chunk). Next you must put it in the Fire Pit:
[c c c]
[c w c]
[c c c]
c= cobble
w = wood log
EasyBake Oven added, new Item ID's, some recipe removal (vanilla furnace), some new recipes, poor attempt at getting axes to take damage when making planks/sticks.