Grenades cannot be assembled with a standard casing
Created by: kernikov
Only beakers can be added to casings, screwdriver secures it whether or not beakers were added. Timers and igniters cannot be added to casings and neither can an assembly of the two. Securing a grenade with only beakers in the casings gives you a dud that can be primed but does not mix the regeants.
Tested with 50u potassium / 50u water.