Image:BackArrowGreen.png See the list of units The Master Carpenter is one of the most important units in Colonization. The Master Carpenter doubles the rate of Hammer production in a Carpenter's Shop or Lumber mill. Carpentry cannot be learned from Indian tribes or through work experience. Master Carpenters may be trained in Europe for 1000 gold, and they may teach their skills in a Schoolhouse, College or University. (They are the only indoor worker who can teach in a Schoolhouse.) In FreeCol, a Master Carpenter appears as one of the first three units in the migrant pool in Europe.