I have nothing on the Mordian 7th blog in terms of sheer numbers, but for me this qualifies as mass production:
These bolter grunts will fill out the ranks of my Alpha Legion army (which still does nothing to help me deal with tanks...) & moonlight as Blood Angels on occasion. In the rear you can see two of my WIP Angels Irrelevant (or whatever they will be called) Kill Team Marines.
Thousand Sons Kill Team Preview
1 hour ago