The CAD design could be passed through a processor to generate the G-code (instructions the CAM processor reads and follows) and then some machinist would review and “fix” tool path or order to make the code more efficient for production.
This captures another angle on the question of whether one should learn a skill or outsource it: if the same person fixes the tool path and designs the component that needs the path fixes, that knowledge will inform their design choices on future parts. If there’s 2 ways you could draw a part and have it work how you need, then having the skills to fix the tool path and the knowledge to spot that one option would have worse path problems than the other will help you differentiate between the actual costs of the superficially interchangeable higher-level design options.
This captures another angle on the question of whether one should learn a skill or outsource it: if the same person fixes the tool path and designs the component that needs the path fixes, that knowledge will inform their design choices on future parts. If there’s 2 ways you could draw a part and have it work how you need, then having the skills to fix the tool path and the knowledge to spot that one option would have worse path problems than the other will help you differentiate between the actual costs of the superficially interchangeable higher-level design options.