PARTS IN  1-3 DAYS

Quick-Turn Machining

We don’t have minimums, we love complex jobs, we deliver the best parts for your money and we hit your deadlines!

“We are extremely happy with the quality of parts
received as well as the level of service…Thanks!”
–Micah H., VP Product Development

“Finding Prototek by chance was like hitting
the Strategic Sourcing Easy Button.”
Brian H., Senior Designer

“On time and to Spec. To EVERYONE involved
producing quality parts a hearty thanks.”
Jim T., Senior Product Engineer

“Fastest quoting & delivery I’ve ever
experienced, & the parts look great!”
John H., Lead Mechanical Engineer

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

Licenses, certifications
and real machining service

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

We work differently than other services and ask questions to help our customers build better and more cost-effective parts before we start manufacturing. We want to be your one-stop shop for machining services so we focus on doing every part, even ones that other companies ‘No Bid’ for complexity. Most of our business is from returning customers and to achieve that, we strive to hit our customers deadlines across all project types.

iso certification intertek

certifications sam

Prototek FAB 40 2020 award

D&B Number Prototek

Machining Services – Working with PROTOTEK

Deep capabilities in sheet metal and machining – design, machining, manufacturing, finishing, and even complex assemblies.

What do we do?

  • Sheet Metal Parts & Assemblies in as Fast as 1-3 Days
  • CNC Milled and Turned Parts in as Fast as 1-3 Days
  • Complex Parts
  • Same Day or Emergency Jobs – Call us Now!

About our fast, flexible personalized service:

  • ISO-9001:2015 Certified, ITAR Registered
  • Quotes within 24 Hours – Call us if you need it faster!
  • Estimates with or without CAD Models
  • We Want Complex Jobs – We Quote Parts Others Reject

Because every job is unique, and many require special considerations for materials, finishing, custom work, and/or urgent delivery – our machining services quotes are turned around by seasoned estimators who confirm all aspects of your job. No automated quoting that works on cookie-cutter algorithms here to limit your project or your imagination. We figure out the best way to run your job first – and that’s why we deliver so many jobs that other shops turn away.

Our machining 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.

NO CAD MODEL, NO PROBLEM
QUOTES WITHIN 24HRS

PARTS & ASSEMBLIES – ONE STOP SHOP

NO ORDER TOO SMALL

EXPEDITED PARTS IN 1-3 DAYS

Why Prototek?

PROTOTEK's 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

Machining

  • 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 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

Assembly

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

Finishing

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

Which Machining Services are Right for You?

Machining is a manufacturing concept that refers to various technologies and processes that extract material from a workpiece using power-driven machine tools to transform it into a desired shape or design. During the manufacturing process, most metal components and parts need some machining. Other products typically manufactured using machining processes include plastics, rubbers and paper goods.

Types of Machining Services

Machining services offer a variety of technologies and processes to cater to a specific customer need. With that, here are some of the more well-known types of machining services:

Milling

A milling tool is a tool that uses a rotating cutting surface with several blades. Milling uses a rotating cutting surface to create non-circular holes or cut unique designs out of a chosen material.

Turning

A turning tool rotates a workpiece on its axis while a cutting tool shapes it to form. The most popular form of turning machines is a lathe.

Drilling

Drilling uses drill bits to make cylindrical holes in solid materials, making it one of the most critical machining processes. The holes made are often used to help in assembly. Drilling is the first step in making finished holes, which get tapped, reamed, bored, and so on, to make threaded holes or put hole dimensions within suitable tolerances.

Drill bits will normally cut holes larger than their nominal size and holes that may not be inherently straight or round, owing to the drill bit’s versatility and propensity to follow the path of least resistance. As a result, drilling is often defined undersize and accompanied by a machining operation to bring the hole to its final size.

Forming or Bending

Forming is a metalworking process that involves deforming metal parts and objects mechanically. The workpiece gets reshaped and transformed without adding or removing material while retaining its mass through forming or bending.

Surface Grinding

Grinding is a technique for removing tiny quantities of material from flat and cylindrical surfaces. More specifically, surface grinders feed work from a table into a grinding wheel in a reciprocating motion.

Lapping and Polishing

Lapping is a machining process that involves rubbing two surfaces together with an abrasive between them, either by hand or by machine. As the abrasive rolls between the two surfaces and extracts material from both, microscopic conchoidal fractures form.

Welding and Post-Weld Machining

Welding machines, welding arms and welders are among a welding professional’s most important equipment. Welding machines produce heat, which melts metal parts and allows them to join together. The best single welding machines differ depending on the type of project.

Materials Available for Machining

Machining MaterialGrade / AlloyHeat TreatableTensile Strength (Ultimate, PSI)Fatigue Strength (PSI)Hardness (Brinell)Machinability 
(AISI Rating)
Machining MaterialGrade / AlloyHeat TreatableTensile Strength (Ultimate, PSI)Fatigue Strength (PSI)Hardness (Brinell)Machinability 
(AISI Rating)
Aluminum 1100-0 No 13000 5000 23 360%
Aluminum 1100-H112 No 13000 4600 23 360%
Aluminum 1100-H14 No 18000 7200 32 360%
Aluminum 2011-T3 Yes 52000 1800 95 360%
Aluminum 2011-T451 Yes 45000 11000 95 360%
Aluminum 2024-0 Yes 27000 13000 47 360%
Aluminum 2024-T3 Yes 63800 20000 120 360%
Aluminum 2024-T351 Yes 57300 20000 120 360%
Aluminum 2024-T3511 Yes 67000 18000 120 360%
Aluminum 2024-T4 Yes 45000 20000 120 360%
Aluminum 2024-T851 Yes 75000 20000 140 360%
Aluminum 3003-H14 No 23000 8700 42 360%
Aluminum 3003-H22 No 20000 10000 37 360%
Aluminum 5052-0 No 28000 16000 47 360%
Aluminum 5052-H112 No 29000 11000 55 360%
Aluminum 5052-H32 No 34000 17000 60 360%
Aluminum 5052-H34 No 37000 18000 68 360%
Aluminum 5083-H112 No 44000 16000 75 360%
Aluminum 5083-H116 No 47000 23000 83 360%
Aluminum 5086-H111 No 40000 15000 65 360%
Aluminum 5086-H112 No 39000 14000 69 360%
Aluminum 5086-H116 No 44000 22000 81 360%
Aluminum 6020-T8 Yes 43900 N/A 100 360%
Aluminum 6061-T6 Yes 45000 14000 93 360%
Aluminum 6061-T651 Yes 46000 14000 93 360%
Aluminum 6061-T6511 Yes 42000 15000 95 360%
Aluminum 6063-T52 Yes 25000 9700 60 360%
Aluminum 6262-T9 Yes 57000 13000 120 360%
Aluminum 7050-T7451 Yes 76000 30000 140 360%
Aluminum 7050-T7651 Yes 80000 31000 147 360%
Aluminum 7075-T6 Yes 83000 23000 150 360%
Aluminum 7075-T651 Yes 80000 23000 150 360%
Aluminum 7075-T73 Yes 72000 23000 140 360%
Aluminum 7075-T7351 Yes 73000 24000 140 360%
Aluminum 7475-T7351 Yes 72000 28000 135 360%
Aluminum K100-S No 41000 N/A 70 450%
Aluminum M-1 No 42900 N/A 85 450%
Aluminum MIC-6 No 23900 N/A 65 450%
Bearing Bronze C93200 No 34800 16000 65 70%
Brass C26000 No 46000-99000 14000 210 30%
Brass C36000 No 4800-77000 16000 78 100%
Brass C46400 No 55000 - 88000 14500 82 30%
Bronze C31400 Yes 40000-60000 N/A 56-59 80%
Carbon Steel A36 Yes 80000 N/A 119-159 72%
Copper C11000 No 25000-29000 11000-17000 82-92 60%
Copper C14500 No 47900 13000 60-130 85%
Phosphor Bronze C54400 No 47000-100000 N/A N/A 80%
Silicon Aluminum Bronze C64200 No 75000-102000 50000 N/A 60%
Stainless Steel 15-5PH Yes 115000-190000 95000-160000 255-388 45%
Stainless Steel 17-4PH Yes 115000-190000 75000-90000 255-388 45%
Stainless Steel 17-7PH Yes 170000 42000 180 75%
Stainless Steel 303 Yes 87000-100000 33000-52000 170-210 75%
Stainless Steel 304 Yes 84000-170000 30000-63000 170-360 40%
Stainless Steel 304L Yes 78000-170000 25000-62000 160-350 40%
Stainless Steel 316 Yes 76000-170000 30000-63000 160-360 36%
Stainless Steel 316L Yes 77000-170000 25000-65000 170-350 36%
Stainless Steel 321 Yes 85000-10000 32000-40000 170-210 36%
Stainless Steel 347 Yes 89000-100000 32000-40000 160-201 36%
Stainless Steel 410 Yes 76000-110000 28000-50000 190-240 54%
Stainless Steel 416 Yes 75000-120000 33000-50000 230-320 50%
Stainless Steel 420 Yes 100000-250000 33000-97000 190 50%
Stainless Steel 420F Yes 110000 39000 230 68%
Stainless Steel 430 Yes 75000 45000 160 66%
Stainless Steel 430F Yes 79800 30000 170 75%
Stainless Steel 440C Yes 100000-290000 38000-120000 222 40%
Steel 1018 Yes 63000-70000 26000-38000 130-140 78%
Steel 1045 Yes 90000-98000 33000-53000 180-190 57%
Steel 1215 Yes 78300 N/A 167 136%
Steel 4140 Yes 100000-160000 N/A 200-310 66%
Steel 11L17 Yes 86300 N/A 179 9%
Steel 12L14 Yes 78300 28000-41000 163 198%
Titanium 6AL-4V Yes 131000 74000 334 22%
Titanium 6AL-4V ELI Yes 125000 20300 326 22%
Titanium 3Al 2.5 No 89900 24700 256 N/A

Multi-Axis Machining Services

As established, milling is among the foremost and most essential processes in any machining service. Milling removes material from a workpiece by feeding it at an angle to the tool’s axis with rotary cutters. A milling machine’s axes decide the type of work performed and where you can do it on the workpiece.

With that, here are the most common types of Milling:

3-Axis Machining

3-axis machining is a milling process that operates on three axes — the X, Y, and Z axes — and originated from the technique of rotary filing. In 3-axis milling, the workpiece remains stationary while the cutting tool mills the component along the three axes. 3-axis machining is still one of the simplest and most common methods for producing mechanical parts, and you can use it to mill slots, drill holes, and cut sharp edges in a back to front, side to side or up and down fashion.

Furthermore, 3-axis machining is suitable for most machining projects, depending on the scale of the production run, the workpiece specifications, accuracy and finish constraints, materials used, and holding capabilities.

4-Axis Machining

The processes involved in 4-axis machining are the same as in 3-axis mmachining, but with an additional axis. 4-axis milling rotates around the X-axis, the fourth axis known as the A-axis, in addition to 3-axis milling’s X, Y and Z axes.

Milling comes in handy when holes and cut-outs are needed on the side of a piece or around a cylinder, 4-axis. They can produce accurate results with fast and efficient work based on computer numerical inputs.

5-Axis Machining

5-axis machining encompasses all the axes in 4-axis machining, with an additional rotational axis — the B-axis — which rotates around the Y-axis. With its capability of producing precise and intricate parts for a wide range of items and pieces, 5-axis milling machines have earned the reputation of the best CNC milling machines today.

The B-axis’s unparalleled precision, finish and pace in creating a piece are attributable to its multidimensional rotation and tool movement. Furthermore, 5-axis machining allows for the development of highly complex, intricate components.

9-Axis Machining

You can turn any component and multi-axis milled in a single setup thanks to the nine working axes. The removal of manual loading and secondary fixtures is the most significant advantage of this machine.

A fully finished product can get produced on a 9-axis unit. Thus, it achieves the highest level of precision by obviating the need for additional operations, resulting in an actual “done-in-one” output.

Machining Using Horizontal Milling

Horizontal milling machines help when precision is not a big factor, the material is challenging to work with, and grooves need to be thicker or deeper. Horizontal milling machines can work faster than vertical milling machines, and their finished products have smoother surfaces. Gravity also assists with taking the chips out of the material. This aid is due to the configuration of a horizontal milling machine, requiring less fabrication at the end of the work.

Machining Using Vertical Milling

A vertical milling machine has a wide range of applications. These devices can easily be modified and maneuvered to cut a wide range of shapes, allowing them to work on a wide range of projects. While manual movement is still needed to cut in various directions, vertical milling has several advantages, including low maintenance and high functionality.

We ship parts ANYWHERE in the US
in as little as 1-3 days!

We ship parts ANYWHERE in the US in as little as 1-3 days!

We have 4 locations that cover the US

West Coast / Silicon Valley Location
215 Devcon Dr.,
San Jose, CA 95112

Mid West Location
900 Cheyenne Ave.,
Grafton, WI 53024

East Coast Location
244 Burnham Intervale Rd.,
Contoocook, NH 03229

East Coast Location
205 Pine St.,
Hopkinton, NH 03229

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.