There is 2 others that i know of the second is not well known but its an even bigger duper than the rm furnace itself.
1:the tank cart able to do exactly what the rm furnace does
2: the mk 2 crafting table and the block breaker are used to dupe ANYTHING it doesn't even have to be stackable it just doubles it endlessly including stack so it will turn 1 stack of rm to 2 stack and 2 stacks to 4 stack and so on
Edit: oh ya and i forgot to mention that the philosipherstone and all automatic crafting tables can craft banned item.
( pls say if this helped )
Edit 2: sry for late reply