Laser cutting and CNC turret punching are two of the most common ways to cut and process sheet metal — and they’re not competitors so much as complementary tools. The right choice depends on your part’s geometry, material, thickness, and volume. Understanding the strengths of each helps you (or your fabricator) pick the most cost-effective process. At MJM, we run both, so we match the process to the part rather than forcing every job onto one machine.

Laser cutting uses a focused, high-power laser beam to melt or vaporize material along any programmed path. Because there’s no physical tooling touching the part, the laser can follow virtually any contour — intricate shapes, sharp internal corners, fine detail, and complex profiles — with excellent edge quality and tight tolerances (MJM holds ±0.005″).

Laser cutting is the better choice for: complex or custom geometries, tight tolerances, thicker material, fine detail, prototypes and lower-volume runs (no tooling to set up), and parts where edge quality matters. MJM’s five Amada fiber lasers cut mild steel to 1″ and stainless and aluminum to 5/8″ — heavier than most job shops.

CNC turret punching uses a rotating turret of tools to stamp holes and shapes into sheet metal at high speed. Beyond simple holes, punching can also form features that a laser cannot — louvers, embosses, knockouts, countersinks, and lances — in the same operation. For parts with many standard, repeating features, punching is extremely fast and cost-effective.

CNC punching is the better choice for: medium-to-high volume runs, parts with standard hole patterns and repeating features, and formed features like louvers, embosses, and knockouts. It’s best on thin-to-medium gauge material (typically up to about 1/4″). MJM runs an Amada CNC turret punch as part of our in-house equipment.

The two processes aren’t mutually exclusive — many parts are best made using both. A common approach: punch the standard holes, louvers, and formed features first (fast and cheap on the turret), then laser cut the complex outer profile and any precise contours. This gets the speed and formed-feature advantage of punching with the geometry and edge quality of laser cutting.

This is where running both under one roof pays off. Because MJM operates laser cutting and CNC punching in-house, we can assign each feature to the most cost-effective process on the same part — a decision a single-process shop can’t make. Which process drives your cost depends on part design; see our guide to what drives fabrication cost.

Choose laser cutting if your part has complex geometry, tight tolerances, thicker material, fine detail, or is a prototype or lower-volume run. Choose CNC punching if your part is thin-to-medium gauge, high volume, and made up of standard holes, patterns, and formed features like louvers or embosses. When a part has both kinds of features, combining the two is often the most cost-effective route.

Not sure which fits your part? Send us your drawings and our engineering team will recommend the most cost-effective process — see how we approach it in choosing a sheet metal fabricator.