premachine

From pre- +‎ machine.

premachine (third-person singular simple present premachines, present participle premachining, simple past and past participle premachined)

1. (transitive) To machine in advance.
   • 2007, Fred D. Barlow, III, Aicha Elshabini, Ceramic Interconnect Technology Handbook, page 275:

     In many cases, the simplest machining solution is to premachine the parts while still in the green state.