What Makes a CNC Part Expensive?

When a CNC quote comes back higher than expected, the reasons are usually design-driven: long machining time, complex geometry, tight tolerances, hard materials, fine finishes, and lots of setups. The encouraging part is that many of these are within your control — which means an expensive part can often be made cheaper without giving up what matters.

What Runs the Cost Up

Tolerances Are a Big One

Asking for tight tolerances everywhere — rather than only where the part needs them — is one of the most common ways to inflate a quote. Tolerances should match function, not be tightened “to be safe.”

Much of It Is Designable

Simplifying geometry, easing tolerances where they aren't critical, choosing a machining-friendly material, and reducing setups can meaningfully lower cost. This is design for manufacturing applied to machining.

Common Mistakes We See

A Good Next Step

A short conversation can help you spot what's making your part expensive — and where changes could bring it down without hurting the design.

Please keep your question general — no confidential product details are needed for the introductory consultation. If confidential review is needed later, an NDA can be arranged before a longer engagement.