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Currently accepting prototype projects
CNC machined prototype part Precision machined prototype component
On-Demand CNC Platform

Rapid CNC
Prototyping

RivCut is your fast prototyping partner. We machine functional prototypes in real metals and plastics. Test, iterate, and move to production — all with one shop. As fast as 3 days.

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Securely upload your 3D CAD file for immediate pricing and DFM feedback.

3-Day
Rush turnaround
on prototypes
Simple geometries
±0.001"
Tolerances on
critical features
RivCut capability
98%
CMM inspected
before shipping
RivCut standard
1-50
Parts per order
no minimums
Any quantity
Rapid Prototyping Explained

What Is Rapid Prototyping?

CNC prototyping makes real parts from real materials — fast. Unlike 3D printing, your prototype is made the same way as your production part. This means you can test fit, function, and strength before committing to a full run.

1

Validate Your Design

Upload your CAD file and pick a material. We check your design before cutting.

2

Test Real Materials

Get a real metal or plastic part. Test strength, weight, and fit on your assembly.

3

Iterate Fast

Make changes and get the next version in days. Lock in your design before production.

Why RivCut

Built for Speed & Iteration

Your prototype deserves a machining partner who moves as fast as your team — without cutting corners on quality.

Speed — 3-Day Rush

Prototypes ship in as few as 3 business days. Same-day quotes keep your project on track. No waiting weeks for simple parts.

CMM Inspection

Every prototype is CMM inspected before shipping. You get a documented inspection report — not a guess. Know your part is right before you test it.

Design Iteration Support

Update your file and get a new part fast. We store every version so you can compare revisions. Most teams go through 3 to 5 rounds before locking in.

Low-Volume Friendly

Order one part or fifty. No minimum quantity and no setup fees on most orders. Perfect for testing multiple versions or investor demos.

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What We Prototype

Prototype Part Types

From functional test parts to investor demos — precision machined and ready to test.

Enclosures & Housings

Prototype electronics enclosures, sensor housings, and device shells in aluminum or stainless. Test fit, thermal performance, and assembly before committing.

Al 6061 & 7075

Structural Brackets

Load-bearing brackets, motor mounts, and structural interfaces. Test strength and stiffness on real materials before finalizing your design.

±0.001" standard

Mechanical Components

Gears, shafts, couplings, and custom hardware. Machine prototypes in the same material as production to validate wear, fit, and function.

Metals & plastics

Optical & Sensor Mounts

Precision mounts for cameras, LIDAR, and sensors. Ultra-tight alignment tolerances for prototyping optical assemblies and test fixtures.

±0.0005" critical

Medical Device Prototypes

Surgical tools, implant test samples, and device housings in titanium, stainless, or PEEK. Test form, fit, and sterilization before regulatory submission.

Ti, SS, PEEK

Investor & Demo Models

Polished prototypes for pitch decks, trade shows, and user testing. Bead blasted, anodized, or painted to look like the final product.

Appearance-ready
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First article prototype undergoing CMM inspection at RivCut
CMM Verified — All Critical Dimensions Passed
Real Part. Real Results.

First Article Prototype — 6061-T6 Aluminum

Machined as a first article prototype for a hardware startup validating a new enclosure design. Delivered in 3 business days with full inspection documentation.

±0.001"
Tolerance on
critical features
32 Ra
Surface finish on
mating surfaces
3 Days
Quote to delivery
rush turnaround
100%
First article
inspection (FAI)
  • Dimensional inspection report (CMM data included)
  • Material certification & heat lot traceability
  • First article inspection report per customer specs
  • NDA-protected project files — confidential handling
What Ships with Every Prototype

Speed. Quality. Design Support.

Prototyping demands more than fast parts. Here is what you get on every order.

Speed & Flexibility

We move fast so you can iterate faster.

  • 3-day rush on simple prototypes
  • Same-day quoting on most uploads
  • No minimum order quantity
  • Bridge production (1–50 pcs)

Verified Quality — CMM

We inspect before we ship. No exceptions.

  • CMM inspection on every order
  • NIST-traceable calibrated gauges
  • ±0.001" standard, ±0.0005" critical
  • Dimensional inspection reports included

Design Support (Free DFM)

We help you get from idea to production-ready.

  • Free DFM review on every upload
  • Design change support between revisions
  • Material selection guidance
  • Seamless prototype-to-production scaling
How It Works

From CAD File to Prototype in Days

Three steps. No runaround. Built for teams that move fast.

Step 1

Upload Your CAD File

Send your STEP or IGES file. Select material, quantity, and finish. We review for manufacturability and respond fast.

Step 2

We Machine & Inspect

Your prototype runs on our CNC mills and lathes. Every order gets CMM inspection. We verify every critical dimension before anything ships.

Step 3

Test, Iterate, Scale

Test your prototype for fit and function. Need changes? Send a new file and we turn it around fast. Ready for production? We scale up with the same tooling.

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Tools & Related

Engineering Tools & Related Services

Free Engineering Calculators

Related Services

FAQ

Common Questions About CNC Prototyping

Most prototypes ship in 5 to 7 business days. Rush orders go out in as few as 3 days. Simple aluminum parts are the fastest. Complex multi-setup parts take a bit longer.
A single aluminum prototype starts around $75 to $200. Steel and titanium cost more. Price depends on size, features, and finish. Upload your file for an exact quote the same day.
Yes. We have no minimum. Order a single part to check fit, or order 10 to test different versions. Many teams order 1-piece first, then 5-10 after design changes.
Aluminum 6061 is the go-to for first prototypes. It machines fast, costs less, and works for most fit checks. Try 7075 if you need more strength. Delrin and ABS are top picks for plastic prototypes.
Standard tolerance is ±0.005 inches. We hold ±0.001 inches on critical dims. Your prototype matches production accuracy, unlike 3D prints that warp and shrink.
Yes. Send us a new file any time. We re-quote the changes quickly. Most prototype customers go through 3 to 5 design rounds before they are ready for production.
Yes. We sign NDAs before we see your files. Your early-stage designs stay private. Startup founders and defense teams trust us with pre-launch prototypes.
We take STEP, IGES, DXF, PDF, SolidWorks (.sldprt), and STL files. STEP is best for prototyping because it keeps full geometry and tolerances.
Yes. That is the biggest win of CNC prototyping. Your prototype uses the same process as production. When you are ready for volume, we already have your toolpaths and material specs locked in.
Upload your CAD file on our instant quote page. Pick your material and quantity. You get pricing within hours. One part is fine. No phone call needed.
Local Service

Rapid Prototyping By City

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Ready to Start?

Upload Your Prototype CAD File

Get a fast quote for your prototype. One part or fifty. Rush delivery in as few as 3 days.

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No minimums · Design changes welcome · NDA ready · Ships anywhere in the US

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RivCut AI Assistant

Ask about prototyping, materials, pricing

Hi! I'm RivCut's AI assistant. Ask me anything about CNC prototyping — materials, tolerances, lead times, or pricing.
STEP, IGES, DXF, PDF, STL accepted · AI-powered