Quick-Turn Sheet Metal Services

We don’t have minimums, we deliver the best parts for your money, and meet your deadlines!

Every job is unique, and many require special considerations for materials, finishing, custom work, or urgent delivery – your commercial quote will be turned around by seasoned estimators who confirm all aspects of your job.

Amazing companies choose PROTOTEK for high-quality parts done fast!

Licenses, certifications
and real sheet metal service

Expertise and quality are paramount. With more than three decades of experience in commercial sheet metal, we’ve achieved a rich set of certifications and provide high-touch attention and service to every quote – and every job.

We engage with our customers to help them design better and more cost-effective parts. We want to be your one-stop shop for commercial sheet metal fabrication. Most of our business is from returning customers, and to achieve that, we strive to hit our customer’s deadlines across all project types.

ITAR Badge Prototek

sam certified

Prototek FAB 40 2020 award

Better Business Bureau Prototek




D&B Number Prototek

AS9100 D Certified

Sheet Metal Services – Working with PROTOTEK

Deep capabilities in commercial sheet metal and machining – design, sheet metal services, manufacturing, finishing, and even challenging assemblies.

What do we do?

  • Sheet Metal Parts & Assemblies in 1-3 Days
  • CNC Milled and Turned Parts in 1-3 Days
  • Additive Manufactured Parts in 1 – 3 Days
  • Expedited Job

About our fast, flexible personalized service:

  • ISO-9001:2015 Certified, ITAR Registered
  • Quotes within 24 Hours
  • Contact us about our expedited services

Our sheet metal capabilities start below but they don’t stop there. Want to talk to someone about a job, upload a file for quote or call us now.


We accept these file types STP, PRT, IGS, DXF, STL, and more!




Why Prototek?


Prototek's In-house Capabilities

Sheet Metal

  • Manufacturing Design Assistance
  • Laser Cutting - Punching
  • Material Graining
  • Drilling - Countersinking - Tapping
  • Forming - Bending
  • Hardware Insertion
  • Mechanical Assembly
  • TIG, MIG, Spot Welding & Weld Grinding
  • Welded Assemblies & Frames


  • Up to 5-Axis Milling
  • Horizontal & Vertical Milling
  • 9-Axis Mill-Turn
  • Turning
  • CNC Routing
  • Surface Grinding
  • Lapping & Polishing
  • Welding / Post-Weld Machining
  • Heli-Coils / Hardware Inserts

Cutting & Engraving

  • Wire & Sinker EDM Cutting
  • Waterjet Cutting
  • CO2 Laser
  • Fiberoptic

Quality Assurance

  • Quality Engineering Assistance
  • CMM Inspection Services
  • First Article and AQL Inspections
  • Compliance and Document Control

Plastic & Composite Fabrication

  • Plastic Thermoforming - Bending
  • Annealing
  • Cryogenic Deflashing & Deburring
  • Plastic Welding
  • Thermal, Adhesive, & Mechanical Bonding
  • Vapor Polishing
  • Radiological Film-Cutting Services


  • Manufacturing Design Assistance
  • Tooling and Fixture Fabrication
  • Electro-Mechanical Services
  • Welded, Mechanical, & Small Parts Assembly
  • Wire Harnessing
  • Laser Cutting – Polymers & Metals
  • Insert Installation


  • Powder Coating
  • Painting
  • Chemical Agent Resistant Coating
  • Silk Screening
  • Laser Engraving
  • Chem Film
  • Anodizing
  • Black Oxide
  • Bead Blasting
  • Tumbling

Additive Manufacturing

  • Laser Sintering
  • Multi Jet Fusion
  • Stereolithography
  • Digital Light Processing
  • Fused Filament Fabrication
  • Material Jetting
  • Cast Urethane

Comprehensive Guide to Sheet Metal Services

Sheet metal services are often used for their high versatility, durability and precision, which makes them ideal for an array of projects ranging from prototypes to parts. Sheet metal fabrication is often used for end-use applications like chassis, enclosures and brackets.

What is Sheet Metal Fabrication?

Sheet metal fabrication is a process that involves bending, punching and cutting thin sheets of metal to create industrial-grade metal components. Sheet metal parts are well-known for their strength and durability, and they’re used in a variety of industries, including automotive, aerospace and defense, communications, industrial, consumer goods and more.

Sheet metal fabrication is a multi-step process that may require multiple people from design to finishing and quality control. Sheet metal comes in a variety of metals and can be formed for almost any purpose. Sheet metal materials include steel, aluminum, magnesium, brass and bronze, just to name a few.

What is Prototyping?

A prototype in manufacturing is an early model of a product that is used to create aspects of the final product. Prototypes demonstrate that a concept is feasible and give a preview of the design’s aesthetics. Prototypes often reveal details about manufacturing methods, materials and costs. Customers may provide input on prototypes so changes can be made before a large quantity is produced.

Sheet metal is often used for prototyping, because it comes in many finishes and is relatively fast. It also gives the option to use a less expensive metal for prototyping before executing the full project.

Rapid Sheet Metal Services

There are many services that can be used in sheet metal fabrication, including…

  • Laser Cutting – Punching

    Punching is a machining technique for removing scrap metal from a sheet of raw metal. It entails compressing a tool through a sheet of raw metal with a punch press. Punching is generally faster and less expensive than laser cutting.

    Laser cutters cut sheet metal by focusing light energy into a laser beam and supplementing it with cutting gas. The sheet stays fixed as the laser head moves in the ‘X’, ‘Y’ and ‘Z’ axes, unlike punches. Part numbers and labels can also be etched with lasers. Laser cutters are more precise and give a more finished edge.

  • Material Graining

    Graining is the method of giving sheet metal pieces a consistent surface finish. This is accomplished by grinding the metal with a belt grinder.

  • Drilling – Countersinking – Tapping

    Drilling produces higher-quality holes that can be used in materials of greater thickness. After that, thread-tapping and countersinking are often done. Thread tapping produces threads inside the drilled hole so that a bolted link can be made later. Countersinking a drilled hole eliminates the sharp edge, provides a bevel, and a recess (deep bevel) for a blind bolt head.

  • Forming – Bending

    Cold working activities such as metal bending and shaping allow the sheet metal to be shaped to configurations that allow for creation of the optimal parts.

  • Hardware Insertion

    Hardware insertion gives sheet metal parts more depth for load bearing threads. Hardware insertion makes use of existing holes created by high-precision machines like a laser cutter or a waterjet cutter, which improves the accuracy of the fastener’s placement.

  • Mechanical Assembly

    Describes the process or final product of putting together sheet metal project components on an assembly line.

  • TIG, MIG, Spot Welding & Weld Grinding

    Welding is used in creating more than half of all of the products manufactured in the United States. MIG welding is the fastest option, but the results are not as smooth as TIG welding.

    The spot welding process is used primarily for welding two or more metal sheets together by applying pressure and heat from an electric current to the weld area.

    Weld grinding is an important step in many metal fabrication processes, and it involves extracting excess weld metal in a clean and efficient manner.

  • Welded Assemblies & Frames

    Sheet metal can be used to create complete welded assemblies and frames for large projects.

Metal Design Considerations

When it comes to metal design, it’s important to consult with an expert to ensure none of the design elements negatively impact the durability of the final product. There are many ways to customize a metal project, each with its own considerations.

  • Bends

    Bending is used to deform a material to an angular shape through the application of force. It is one of the most common sheet metal design methods and may also be called press braking, flanging, die bending, folding or edging.

  • Wall Thickness

    The thickness of the sheet metal will affect how it should be handled and the force needed to apply design methods.

  • Bend Relief

    An incision cut along the sides of a proposed bend in sheet metal to prevent tearing and part deformation during the bending process. Bend relief lengths and widths vary between projects and depending on the metal used.

  • Slots and Holes

    Holes and slots must be at least as wide in diameter as the material is thick. It’s also important to consider distance from the edge. If a material is 0.036 in. (0.914mm) or thinner, the hole should be 0.062 in. (1.574mm) from the material edge; if the material is thicker than 0.036 in. (0.914mm), the hole should be at least 0.125 in. (3.175mm) from the material edge to avoid distortion. Hardware inserts may affect these requirements.

  • Tabs and Notches

    Tabs and notches also come with distinct requirements for effective metal fabrication. Notches must be at least the thickness of the material or 0.04 in. (1.016mm), whichever is greater, and no more than 5 times the width of the material. Tabs must be at least 2 times the thickness of the material or 0.126 in. (3.200mm), whichever is greater, and no more than 5 times the width.

  • Hems

    Hemming is a metalworking technique that involves rolling the edge of sheet metal over and onto itself, forming a two-layer field. There are two types of hems, open and closed. The tolerance of a hem is dependent upon the hem’s radius, material thickness and features near the hem. Ideally, the minimum inside diameter should equal the material thickness, and a hem return length of 6x material thickness.

  • Countersinks

    Conical holes are cut into a manufactured item to allow a screw, nail or bolt to be inserted flush with the surface.

  • Offsets

    Offsets are used to create Z-shaped profiles in sheet metal parts.

  • Welding

    Welding fuses metal parts together by melting them together with high heat and then allowing them to cool. There are multiple types of welding, and the ideal strategy will depend on your material and project.

Prototek's Locations

215 Devcon Dr.
San Jose, CA 95112

Sac EDM a Prototek Company
11341 Sunrise Park Dr.
Rancho Cordova, CA 95742

Midwest Prototyping a Prototek Company
1100 W 120th Ave #100
Westminster, CO 80234

900 Cheyenne Ave.
Grafton, WI 53024

Midwest Prototyping a Prototek Company
10949 Blackhawk Dr
Blue Mounds, WI 53517

Prototype Solutions Group a Prototek Company
1621 Indianhead Drive
Menomonie, WI 54751

205 Pine St.
Contoocook, NH 03229

244 Burnham Intervale Rd.
Contoocook, NH 03229

ProtoCAM A Prototek Company
6620 Grant Way
Allentown, PA 18106

Prototek Trending Topics

Sheet Metal

CNC Machining

Additive Manufacturing

Frequently Asked Questions

Are you a broker or a manufacturer?

We are a full service sheet metal and machining manufacturer with four U.S. production facilities across the nation allowing us to deliver your high-quality parts FAST.

Does PROTOTEK manufacture in higher-volume quantities?

We focus on prototypes to low-volume production and can do larger runs. All our parts, from one – to 100 – to 1,000+ are always delivered with production-quality finish.

What are your payment terms?

PROTOTEK offers Net 30 payment terms for established customers with good credit.

What file formats are required or suggested for requesting a quote?

We accept .STP, .DWG, .IGS, .PDF, Parasolid files, and more.

What if I need help with my part design?

Our estimators are on hand to discuss your specific job needs. Our expert team can help you move your project smoothly through the design process and on to delivery.

If I do not have a CAD model, can you quote/fabricate my parts?

Yes, we can work directly from your drawings. Additional engineering charge (NRC) may apply depending on complexity.

How do I submit my NDA and other document requests?

Submit your NDA, Approved Vendor and other document requests to your sales rep or estimator.

How long is a quote valid?

Our quotes stand firm for 7 days from the date of issue.

How fast can I get my order?

Lead time for standard orders is 10 business days. Expediting options are available, including emergency service – down to as fast as 1-2 business days, depending on complexity of work and materials.