Basically use SHIFT+mouse/trackpad to make a straight line of metal. Then, using your scroll wheel, make a decent sized circle of "ETRD" touching the metal. Then for the target. Make a tank/house/plane/whatever to be the victim, then put a little ETRD on them. Volia, death ray.
Basically use SHIFT+mouse/trackpad to make a straight line of metal. Then, using your scroll wheel, make a decent sized circle of "ETRD" touching the metal. Then for the target. Make a tank/house/plane/whatever to be the victim, then put a little ETRD on them. Volia, death ray.