Sheet Metal Punching

At TMT, our CNC punching services provide the exact shape that is needed for various different types of sheet metal. Its ability to produce such precise, clean results makes it a fundamental option for sheet metal fabrication. 

CNC punch presses are a great alternative to laser cutting because of their accurate ability to punch a variety of different shapes; both geometric and custom. Typically used for short to medium runs, our punch presses provide a fast turnaround to supply the desired shapes needed.

CNC Punched Parts & Applications

Plasma cutting creates a cost-effective way to cut thicker metals, and develop them into final components for usable parts and structures.

The chassis we fabricate are typically used to house electromechanical controls, from small handheld devices to large industrial testing equipment. All chassis are built to critical dimensions to ensure hole pattern alignment between different parts.

TMT builds custom brackets and miscellaneous laser cutting components. Our capabilities allow for fasteners and additional conveniences to be built-in to almost any manufactured part. 

About Our Sheet Metal Punching Process

Controlled by a CNC punch-press machine, CNC punching create holes or special indents on various types of sheet metal. CAD files feed the punching machine with exact details to make sure precise movements are met and the machine punches in the correct shape. Thus creating clean-edged shapes at low tolerances in a quick manner. CNC punch presses are able to function with various sheet metals that range from 0.5mm to 6.0mm thick.

Our CNC Punching Process:

1. Our process begins with our engineers choosing the correct materials needed. The correct sheet metal and thickness asked.  2. The design then is uploaded to one of our CNC machines as a CAM file.  3. After that, the correct punching tool is placed on the punch press to give the piece the needed shape. The tool is able to punch the precise shape, dimple, or embossment into the metal. 4. Using the CAM file, the machine moves the sheet metal in an x and y direction, accurately placing it under the punch press for the exact placement of the punches.

Metal Finishes for Punched Parts

An as-milled option is viable for quick turnaround and parts that do not require visual appeal. Leaving the parts with an unfinished surface with visible marks from machine and potentially rough or sharp edges. 

Also called “Bead Blasting,” this finish creates a smooth matte appearance on metals.

Parts and applications may have an anodized finish for a wide variety of custom colors, which may include clear, black, gold, or desired custom colors.

  • – Type II Anodized Finishing creates a finish that is resistant to corrosion.
  • – Type III Anodized Finishing creates a thicker finish that is more wear resistant than its lesser option.

Powder coating is a painting process where powdered paint is sprayed on a part or application prior to heating. The result is a strong layer that is more resistant to wear and corrosion.

This process also allows for a wide selection of colors for the further  customization of color.


Also known as Chem Film or Chemical Conversion Coating, this metal coating provides corrosion resistance and conductive properties. This coat may also be used as a base for painted or color finishes.


If a custom finish is required for an order, or the finish is not listed on our site, please include this information when requesting a quote. We can likely still complete the project. 

Material Options for CNC Punched Parts

  • ✓ 2024 Aluminum Alloy
  • ✓ 3003 Aluminum Alloy
  • ✓ 6061 Aluminum Alloy
  • ✓ 7075 Aluminum Alloy
  • ✓ 301 Stainless Steel
  • ✓ 304 Stainless Steel
  • ✓ 316/316L Stainless Steel
  • ✓ 1018 Steel
  • ✓ 101 Copper
  • ✓ 102 Copper
  • ✓ 260 Copper (Brass)
  • ✓ C110 Copper

Request A Quote for CNC Punching

Competitive quotes and quick turnaround times are the reason we are able to provide same-day quotes. Our goal is to make it easy to find the most affordable project solution out there. 

CNC punching machines are built for precision and are perfect for the production of parts and prototypes. We offer our CNC punching services anywhere in the United States. Because of 20 years of exceptional service, TMT guarantees high-quality finished parts, competitive pricing, and fast turnaround on all services offered.