A neat thing about the intracosmic blast shot is that (in Spaced-Out) you can shoot down incoming meteor showers from anywhere on the map. My primary colony's defending an outpost which lets me put off making steel. But to do this you have to actually notice them before it's too late. Previous designs with a filter gate (the idea being to let dupes simply walk past) suffered from a flaw from dupes working too fast, so instead I got notified when repairing on-going meteor damage. But it's still manual—probably you could have a set of six blasters targeting neighbor tiles. However that requires an actual target so would be horrid to setup.

>>529717058
My Lab map has three oil wells so I haven't needed to bother with seakomb. Don't regular Relica asteroids have wells & slicksters?