Works good. Just need and Upgraded belt version.

Place this blueprint, put whatever you want duplicated in the storage, let the belts fill up. Then delete the merger.

Caduzeus, it's cause there is a dup bug and this is one of them, u place item u want to dupe in the container when the belt is full u remove the merger and hop double the amount that was on the belt

Why? What's the point of this? It does not do anything.