Factorio Forums

worph wrote: Tue Jul 21, 2026 10:22 pm b) that same rocketsilo can do different things, too, like send up bioflux. But I like to program some circuit logic to make sure there is nothing else in the silo, or different types of things at the same time, whatever.

There's an easy way to make sure the silo doesn't contain anything else: have an inserter moving items from the silo to a chest, and set that inserter to a blacklist filter containing the item you are currently trying to load.