Proto Works Machining

Turning Ideas Into

Metal

Fast

Prototype + short-run CNC machining for R&D and product teams. Quotes in 24 hours. Parts in 2–7 days.

Tolerances to ±0.0005″

DFM from real machinists

Inspection reports on request

Request a Quote

In-House Precision. Real Machines. Real People.

Proto Works Machining operates a full CNC job shop — not an automated quoting portal.

Core Capabilities:

CNC Milling

3- and 4-axis machining on Mazak verticals and horizontals.

CNC Milling

3- and 4-axis machining on Mazak verticals and horizontals.

CNC Milling

3- and 4-axis machining on Mazak verticals and horizontals.

CNC Turning

Live-tool lathes for precision shafts, bushings,and housings.

CNC Turning

Live-tool lathes for precision shafts, bushings,and housings.

CNC Turning

Live-tool lathes for precision shafts, bushings,and housings.

Tolerances

Typical ±0.001″, as tight as ±0.0005″ when required.

Tolerances

Typical ±0.001″, as tight as ±0.0005″ when required.

Tolerances

Typical ±0.001″, as tight as ±0.0005″ when required.

Inspection

Digital mics, calipers, pin gauges, and CMM verification through inspection partners.

Inspection

Digital mics, calipers, pin gauges, and CMM verification through inspection partners.

Inspection

Digital mics, calipers, pin gauges, and CMM verification through inspection partners.

Finishes

Bead-blast, anodize, black oxide, chem film, passivate, zinc, and more.

Finishes

Bead-blast, anodize, black oxide, chem film, passivate, zinc, and more.

Finishes

Bead-blast, anodize, black oxide, chem film, passivate, zinc, and more.

Materials

Aluminum, steel, stainless, brass, titanium, and engineered plastics.

Materials

Aluminum, steel, stainless, brass, titanium, and engineered plastics.

Materials

Aluminum, steel, stainless, brass, titanium, and engineered plastics.

Every part we quote is reviewed by an experienced machinist — not an algorithm. If something

doesn't look manufacturable, we'll tell you before you waste time or money.


Real Machinists. Real Parts. No Middlemen.

ProtoWorks Machining runs out of a working production shop in Milwaukee, WI — not a marketing office. We’ve spent years cutting prototypes, fixtures, and short-run parts for OEMs, R&D teams, and startups that need fast turnaround and flawless quality.

We’re not a middleman or online platform. When you work with us, the same machinists who program the toolpaths and run the parts are the ones quoting your job and checking every dimension before shipment.

That’s why communication stays tight, quality stays consistent, and lead times stay short.

Real Machines

Mazak CNC mills and live-tool lathes in our shop

Real Machines

Mazak CNC mills and live-tool lathes in our shop

Real Machinists

Experienced operators who review every quote

Real Machinists

Experienced operators who review every quote

Direct Communication

Talk to the people who will make your parts

Direct Communication

Talk to the people who will make your parts

Request a Quote

Sample Projects

High-precision machining across a wide range of materials

Representative images only. Actual customer parts are not shown for confidentiality.

Request a Quote

How It Works

From design to delivery in three simple steps

01

Send CAD

Upload STEP, Parasolid, SolidWorks, or PDFdrawings.

01

Send CAD

Upload STEP, Parasolid, SolidWorks, or PDFdrawings.

01

Send CAD

Upload STEP, Parasolid, SolidWorks, or PDFdrawings.

02

Get a Quote in 24 Hours

Includes DFM feedback and clear lead time.

02

Get a Quote in 24 Hours

Includes DFM feedback and clear lead time.

02

Get a Quote in 24 Hours

Includes DFM feedback and clear lead time.

03

Receive Machined Parts—Fast

Standard 2–7 days; inspection and labeling included.

03

Receive Machined Parts—Fast

Standard 2–7 days; inspection and labeling included.

03

Receive Machined Parts—Fast

Standard 2–7 days; inspection and labeling included.

Talk Directly to a Machinist.

Send your print or model — we'll get you a quote fast, from a real person who understands machining.

What to Include:

Part description or print

Quantity and required delivery date

Any critical tolerances or special notes

File Upload (we can sign an NDA if needed)

Contact Info

Email

cooper@protoworksmachining.com

Phone

(262) 781-3870

We Actually Answer the Phone

We typically reply within 24 hours — and if your job is urgent, just call. We actually answer the phone.

© Proto Works Machining — Real CNC shop. Real machinists. Direct communication.