Engineering & Prototype Parts We Machine
We machine prototype parts, test fixtures, custom tooling, and sample components for engineering firms. Common materials include 6061 aluminum, 7075 aluminum, 303 stainless, brass, and Delrin.
Prototype Parts
Rapid-turn prototype components for design validation and concept testing. Single parts or small batches with fast iteration cycles.
Test Fixtures
Custom test fixtures and validation rigs machined to tight tolerances for repeatable, reliable testing of your assemblies and components.
Custom Tooling
Specialized tooling, dies, and forming tools machined from hardened tool steel or aluminum for your manufacturing processes.
Jigs & Gauges
Precision go/no-go gauges, alignment jigs, and inspection tools that ensure your production parts meet specification every time.
Sample Parts
Pre-production sample parts for client presentations, trade shows, and stakeholder reviews with production-grade quality and finish.
Why Pleasant Hill Engineering Firms Choose RivCut
Ships from Union City, CA
We machine and ship from our shop in Union City, California. Pleasant Hill companies get fast delivery with ground shipping, and we ship nationwide for teams anywhere in the US.
Instant AI-Powered Pricing
Upload your STEP or IGES file and get a real price in seconds. No waiting for a human to review your file. If your part is complex, we follow up within hours with a confirmed quote.
Tight Tolerances, Every Part
We hold ±0.001" on standard features and ±0.0005" on critical dimensions. Every part gets CMM inspection with a dimensional report included.
Full Documentation
Material certs, dimensional inspection reports, and process records ship with every order. We provide the documentation your quality team needs for incoming inspection and traceability.
3 Steps to Precision Parts
Upload & Quote
Send your STEP or IGES file. Pick material, quantity, and finish. Get an instant AI price or a confirmed quote within hours.
We Machine & Inspect
Your parts run on our CNC mills and lathes in Union City, CA. Every order gets CMM inspection and full dimensional verification.
Ship with Full Docs
Parts ship with material certs, inspection reports, and all required documentation. We ship to Pleasant Hill and anywhere in the US.
Ready to Order Engineering CNC Parts?
Upload your CAD file for instant pricing. We machine and ship from Union City, CA to Pleasant Hill and across the entire US.
No minimum order · STEP, IGES, DXF accepted · Free DFM review