CNC Machining vs Injection Molding

CNC machining and injection molding solve the same problem — making parts — in very different ways, and the right choice usually comes down to volume. CNC has no tooling cost and suits lower volumes and metal parts; molding has a big upfront mold cost but a low per-part cost that pays off at scale. Here's how to think about which fits.

The Core Difference

CNC cuts each part from solid material, so you pay per part with no tooling. Molding builds an expensive mold once, then makes cheap parts. That single difference — tooling or no tooling — drives most of the decision.

When CNC Fits

When Molding Fits

It Often Changes Over Time

Many products start with CNC or 3D printing and move to molding as volume grows. Choosing with that path in mind avoids paying for tooling too early — or getting stuck machining at a volume where molding would be cheaper.

Common Mistakes We See

A Good Next Step

A short conversation can help you match the right process to your part and volume — and plan the switch if your volumes grow.

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.