On the backside of the woolen mill, the machine and locksmith shop occupied a building adjacent to the millwright's shop. The metal workers kept the metal components of the mill and farm machinery repaired, and they installed new technology as it became available. In addition to maintaining the mills' machinery, the metal workers also made objects for general use, such as locks. The locksmiths in the Amana Colonies made a distinctive German-style lock. One author described the locks as "peculiarly large." They can be found in buildings throughout the Amana Colonies today.
Today, the machine and locksmith shop building is not open to the public. For sometime it held Roger's Anvil/Industrial Machine Shop Museum.
The machine and locksmith shop building is located at 822 48th Ave., in Amana. It is not open.