CNC machining preparation
Files and requirements for CNC machining
A solid 3D model defines nominal geometry; a drawing communicates requirements that geometry alone cannot describe.
Provide the model
STEP or another solid CAD format is preferred. Include separate files for each part and identify the revision.
Add the drawing
Call out tolerances, datums, threads, fits, surface finish, heat treatment, coatings, deburring, and inspection requirements.
Confirm production details
Specify material grade, quantity, repeat-order expectations, supplied components, packaging, and target date.