Vitamin parts

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Parts that an production/assembly process …

  • … needs / is dependent on from other preceding external pre-production processes and …
  • … cannot be produce by itself that process

A term "vitamin" is used in the space of RepRaps 3D printers
(RepRap … recplicating rapid prototyper) which are 3D printers that can do

  • partial self-replication – replicating all parts except the vitamin parts
  • dependently self replictaion – they can only make the parts not assemble them
    – no in place printing of whole printers, no automated assembly on the second assembly level.

Related

The concept of vitamin parts can be applied quite broadly.