Board Thread:Questions and Answers/@comment-6754909-20130421160737

I got my interface on top of a induction Smelter to craft 3 Invar from 2 Iron ingot and 1 Ferrous ingot. It works great except when i request over a stack of it or so. Then the Smelter is just filld upp with iron in both of the top slots and got no room for Ferrous.

Anyone who has any idea how to "fix" this problem? 