Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
This trap can usually kill a small demolisher if you build it with the long end sticking into the territory. Make sure the two turrets with only 1 ammo are at the back, once they are destroyed or run out of ammo then the majority of turrets will fire.
Tested with damage +120%, shooting speed +150% -- but may work earlier than that!
