The same CNC machine makes both a one-off prototype and a run of 500—but the process around the part changes as volumes rise.
Prototyping priorities
Speed and iteration dominate. Fixturing is often soft jaws or double-sided tape; tolerances focus on fit and function; inspection is light. The goal is to learn fast and cheaply.
Low-volume production priorities
Repeatability dominates. Dedicated fixtures, proven toolpaths, and a defined inspection plan keep every part consistent with the first article. Engineering review up front prevents surprises at batch size 200.
The bridge: first article inspection
Before a full run, a first article is measured against the drawing and any discrepancies resolved. That approved part becomes the reference for the batch.
FAQ
Can I prototype and produce at the same shop? Yes—and it is smoother, because the process knowledge carries over.
When does machining beat molding? Below roughly 1,000–10,000 parts (depending on geometry), CNC is usually faster and cheaper than tooling a mold.
