Maximum of one worker at a time.
Takes 3 (instead of 5) log and transforms it into 1 plank, much like the stonemason transforms stone into cut stone cheaper than crafting does.

Built in forest. Cost:

• 20 Log
• 10 Cut stone

• 20 Land

Sawmills are better than Manufacturers.

Summery of options:

• Manufacturers produces 12% more planks/tick per effective land (0.1589403973 Workers per effective land)
  • Essentially it uses 10.9% less Land for the same production amount.
• Sawmill uses 63% less Workers per effective plank output.
  • The amount of resources you conserve from less workers is better than the extra output that 10.9% of land could provide, because workers also have their own effective land costs (such as housing, heating, food production, cooking/food infrastructure, clothing production, cotton infrastructure, etc).

Note: Effective Calculations use +50% boost from Happiness. Effective Land is based on Level 3 Logger Camps providing 0.0277 logs/tick per land while each land uses 0.25 Workers (fully staffed, 5/5). Foresters provide 0.0125 trees/tick per land while each land uses 0.1 Workers. So, at 36 Land (9 Workers) for 1 Log/tick and 80 Land (8 Workers) for 1 Tree/tick is 116 effective Land (and 17 Workers) for 1 effective Log/tick.

  Sawmill produces 0.002 planks/tick per land (0.05 Workers) while requiring 0.006 logs/tick (0.696 Land and 0.102 Workers)
  0.002 planks/tick per 1.696 Land (0.152 Workers)
      = 0.0011792452 planks/tick per effective Land (0.0896226415 Workers)
      = 848 Land per plank/tick (76 Workers)

  Manufacturer produces 0.00571 planks/tick per land (0.2 Worker per land) while requiring 0.0285714285 logs/tick or equivalent of 3.3142857142 Land (0.4857142857 Worker per land).
  0.00571 planks/tick per 4.3142857142 Land (0.6857142857 Workers)
      = 0.0013245033 planks/tick per effective Land (0.1589403973 Workers)
      = 755 Land per plank/tick (120 Workers)