Thaumcraft is a mod that lets u do ENDLESS possibilitys with regular MC and other mods like Buildcraft and others like that AND if you make the right machine u can duplicate items from it. From another mod the most Thaum making items in Marbel from another mod that i cant think of haha :D hope this helped in a way :))

http://www.minecraftforum.net/topic/838839-125-thaumcraft-215a-updated-on-1052012/
(Like to this beastly mod) :)