Which Manufacturing Processes Does Protolabs Provide for Prototyping and Production?

Protolabs offers four core manufacturing services—injection molding, CNC machining, 3D printing, and sheet metal fabrication—covering the path from early prototypes to end-use production. Which one fits your project depends mainly on part quantity, material, tolerance needs, and how fast you need parts. The company positions itself as a digital manufacturing resource that provides an interactive quote with free design analysis within hours, with parts delivered in days.

Injection Molding

Best suited for low-volume through higher-volume production runs. According to Protolabs, molding supports up to 100,000+ parts with volume pricing available and no minimum order quantity (MOQ). The service covers 100+ plastic, elastomeric, and silicone rubber materials, and includes a free moldability consultation to speed up design and molding decisions. In-house quality documentation is handled through an automated CMM.

Choose this when you need molded plastic or rubber parts and want to avoid tooling commitments tied to large minimum orders.

CNC Machining

Best suited for precision metal and plastic parts, from one-off prototypes to cost-efficient higher volumes. Protolabs states machined parts can ship in as fast as 1 day, with optional plating and anodizing in as fast as 4 days. Tolerances go down to ±0.001 in. (0.020 mm) through its digital manufacturing network, which also unlocks tighter tolerances and volume pricing beyond standard machining.

Choose this when your design requires tight tolerances, metal parts, or surface finishing.

3D Printing

Best suited for prototypes and precise, repeatable production parts. Protolabs offers seven different additive manufacturing technologies, including metal 3D printing, so you can match the process to the part's geometry, material, and precision requirements from a single source.

Choose this when you need complex geometries, fast iteration, or additive-specific materials.

Sheet Metal Fabrication

A fourth service listed alongside the others, suited to formed metal parts such as enclosures and brackets. It is presented as part of the same quote-and-produce workflow rather than a separate offering.

How to Choose

What to Expect When You Start

You can request an instant online quote or contact the production team for larger programs. The quote process includes free design analysis, and Protolabs states certifications including ISO 9001:2015, ISO 13485:2016, AS9100D, and ITAR registration—relevant if your parts are subject to export restrictions, which the quote form asks about directly.

A practical next step: upload your design for an interactive quote, review the design-for-manufacturability feedback, then confirm the process and material before production.