San Jose, CA · Serving Silicon Valley

Rapid 3D printed parts for engineers

Functional prototypes, fixtures and small-batch production, made in house by a mechanical engineer in San Jose.

Upload a STEP, STL, OBJ or 3MF file and see a price in seconds. The geometry is read in your browser. Nothing is uploaded.

350 × 320 × 320
mm build envelope, single piece
From 4 days
Standard turnaround · 2 days on Ultra Fast
San Jose, CA
Made in house, serving Silicon Valley

A part larger than the envelope is split along a joint line, printed as sections and bonded into one piece. The estimator tells you when that applies, and the joint line is confirmed during review.

Engineering tolerances available, reviewed per part. What FDM will hold moves with material, geometry, feature size, orientation and finishing, so a single site-wide figure would be misleading. Tell us which dimensions are critical and we will tell you what we can hold on yours, before you order. How we state tolerances.

Why Seabright

A local shop, run by the engineer who prints your part.

Plenty of places will take an STL. Fewer will look at the part, tell you what the process will do to it, and be there when you need twenty-five more.

Engineer-run

The mechanical engineer who reads your model is the one who prints it. No automated queue in between.

Fast

The estimate is instant, and prototypes are not scheduled behind a production backlog. Lead time is calculated from your geometry, not from a marketing number.

In-house

Parts are printed, finished and packed here, on equipment we own and maintain. Nothing goes out to a fulfilment network.

Prototype to production

Start with one part. Order a repeat run next quarter from the same file and the same profile.

Local

A prototype shop in San Jose.

Seabright Mechanical gives engineering teams in San Jose and across Silicon Valley a nearby source for functional prototypes, fixtures and small production runs.

  • Faster back-and-forth. A question about a fit or an orientation is answered in your working hours, by the person holding the part.
  • One call settles it. Orientation, fits and material, agreed in one conversation instead of four emails.
  • Local pickup. Collect in San Jose instead of waiting on a carrier, by arrangement.
  • Easier repeat orders. The shop already knows your material and your last setup.
  • San Jose
  • North San Jose
  • Santa Clara
  • Milpitas
  • Sunnyvale
  • Mountain View
  • Cupertino
  • Campbell
  • Fremont
  • Palo Alto

One shop, in San Jose. The towns above are the market it serves, not offices it keeps.

Need it fast?

Upload the CAD. You get four turnarounds with the price of each.

Get a Quote

Or email 3dp@seabrightmechanical.com

What We Make

Functional hardware.

Prototypes that get loaded and tested, fixtures that make a process repeatable, housings and manifolds, and the repeat parts that follow when a design is proven.

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Functional prototype

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Fixture or manufacturing aid

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Enclosure, housing or manifold

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Small-batch production part

Photographs of sample parts are not up yet. We do not put stock photography, a render, or somebody else's part on this page. Send a CAD file and we will tell you what we would do with it.

Talk to an engineer, not a sales queue.

Your project is handled by a mechanical engineer, from the first question to the packed box.

Design intent, and whether the geometry is fighting the process
Material selection for the load, the heat and the environment
Tolerances and fits, stated against your critical dimensions
Print orientation chosen for the load path
Manufacturability feedback before the part is built
Quantity, iteration and what changes when the run grows
Who This Is For

Hardware teams across Silicon Valley.

If your printed part has a job to do inside a product, a machine or a process, send it. The list below is who this is built for, not a customer list.

Robotics
Semiconductor equipment
Industrial automation
Aerospace
Automotive
Consumer hardware
Hardware startups
R&D and test engineering
Manufacturing and process

What we are not: we hold no AS9100, ISO 13485 or IATF certification, and we do not supply flight, medical or safety-critical hardware. Aerospace and automotive teams buy prototypes, fixtures and test hardware from shops like this one, and that is the work we are describing.

Typical parts, printed from your CAD: functional and mechanical prototypes, fixtures and manufacturing aids, tooling, enclosures and housings, manifolds and ducting, robotics components, replacement parts for equipment out of production, test hardware, and repeat low-volume parts.

From Prototype to Production

First prototype through low-volume production.

One prototype now, twenty-five parts next quarter. Both are normal here, with no second supplier and no requalification step in between.

Step one

Prototype

A single functional part, priced from its own geometry. No tooling, no minimum run, no setup fee.

Step two

Engineering iteration

Fit it, load it, find what is wrong, change the model. A revision is a new file and a new build, not a new tool.

Step three

Small-batch production

Repeat parts from the same file, material and profile, with volume pricing that steps down as the run grows.

Start with a prototype. Keep us as your production partner. While a job is open we hold the exact CAD it was priced from, so a repeat order builds the revision you approved. Files are deleted when the project is complete, as our privacy policy says.
How Quoting Works

Have a part? Upload the CAD. Get a quote.

1

Upload your CAD

Drop in a STEP, STL, OBJ or 3MF file and choose material, quantity and how fast you need it. Your files are read in the browser; the geometry never leaves your machine.

2

Get an instant estimate

The estimator prices the part from its geometry and your options, itemizes every line, and builds a PDF you can put in front of purchasing the same afternoon.

3

Engineering review

Every submitted estimate is reviewed by an engineer before production. We may adjust price, material or lead time, or suggest a design change, based on geometry, manufacturability and tolerances. You get the final quote before anything is built.

And if we get it wrong: If a part does not match the approved geometry and the stated tolerance, we remake it at our cost.
Capabilities

What we build.

Have a spec sheet, a tricky tolerance or a part that keeps failing in service? Send it, and we will tell you whether FDM is the right answer.

FDM 3D Printing

Run and finished in house, with orientation, walls and material set by engineering for your load case.

Learn more →

Functional Prototypes

Parts you can bolt in, load and break, not display models. Iterate a revision at a time.

Learn more →

Small-Batch Production

Repeatable runs from a handful of parts to hundreds, with no tooling cost and no minimum run.

Learn more →

Engineering Materials

Engineering thermoplastics, from commodity PETG through unfilled and carbon-filled nylons. Tell us what the part has to survive.

Learn more →

Free 3D part viewer

Open an STL, STEP or 3MF file in your browser and cut a section through it to check wall thickness and internal features. No account, no upload.

Open the viewer →

PETGPETG ESDPLAABSNylon (PA)Nylon CF (PA-CF)PPA-CFPPS-CFPCASATPU

These are the materials the estimator will quote today, read from the configuration it prices from.

Larger-format capacity and further additive processes are planned. Nothing is offered on this site until the machine that does it is in the shop.

Seabright Mechanical

Send us your project

Describe the part below and it goes straight to an engineer.

We are glad to work under an NDA. If you need one signed before you send geometry, just ask.

Prefer email? 3dp@seabrightmechanical.com.

Have the CAD already? The instant estimate prices STEP, STL, OBJ or 3MF in seconds, in your own browser. You can also email files to 3dp@seabrightmechanical.com and we will match them to this request.

We ship within the United States only. Local pickup in San Jose can be arranged.

We reply from the shop, usually within one business day.

Ready to price a part?

Upload the CAD and see the number.

Send a CAD file, get a price Get a Quote

This site sets no cookies. No tracking, no analytics, no advertising pixels. What this browser keeps for you, all of it on your own device: that you closed this notice, the parts and settings in an estimate you have started (twelve hours), and a file handed from the 3D viewer to the estimator (ten minutes). What is stored, and why