960 sails/min (stone, fire ice, iron ingots, copper ingots). North-South orientation, either direction, compact stackable, in equatorial region. no proliferators used. 7 fabs fit in one quarter hemisphere (56 fabs on a hole planet). Mathematically up to 53760 solar sails per minute possible, but never testet.
Inputs: stone, iron ingots, copper ingots, fire ice