Precision Machining Experts

Since 1980, Tamshell has provided precision CNC machining services to critical industries and organizations in aerospace, defense, medical devices, hydraulic & pneumatic, fluid control, oil and gas, energy and more.

We specialize in precision, tight tolerance machining of all types of plastics and polymer materials, in addition to soft metal alloys such as aluminum, brass, bronze, and steels.

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core services

Our state-of-the-art machine shop retains dozens of high-tech CNC mills, lathes and Swiss-type screw machinery with seasoned machinists who take great care to make all parts direct-to-print.  Every part is delivered to our customers burr-free and of the highest quality.

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Precision Machining

Contract Manufacturing

For decades, our customers have entrusted Tamshell with delivering to their varying contract manufacturing requirements. Our customer service experts work with them every step of the way.

Quality Assurance Guarantee

Our Quality Promise is to always deliver all components we machine, to our customers, 100% to their specifications with zero burrs, flaws or missing features.

Engineering & Product Support

Whether in the prototype or production phase of the lifecycle of a product, our materials and machining expertise has proven invaluable to engineering departments and product managers alike.

We’re highly knowledgeable about almost every type of polymer (plastics) material and the effects of machining such materials to hold the critical tolerances and features required..

we work with...

Aerospace, Real Space, Defense and Security, Medical Devices, Fluid Control, Oil and Gas, Energy and Power, Hydraulic/Pneumatic, Flow Control Systems, Microfluidics, Biological Implants and dozens of other industries and verticals who require quality custom machined parts.

The Supply Chain

We work with Buyers, Procurement & Purchasing Departments to fulfill their orders on-time, to spec, burr-free, and properly packaged and shipped. We understand purchasing programs and our customer services work hard to meet their needs.


We provide specialized help to meet the requirements of Engineers who need to test their applications to get them off the ground. Short order runs and time sensitive design-to-parts are just some of the accommodations Tamshell can deliver.


Working on projects where you need prototype parts made to spec? Tamshell can make your parts and ship direct to you. We can provide your parts from beginning to end and everywhere in-between.

Program Managers

Aerospace and other verticals who run programs designed to keep the wheels of production moving and meet strict deadlines. Managers of these programs who require a shop that will move at their pace and pivot at critical junctures.

About Us

Birds eye view of Tamshell's Machine Shop

Precision is our strategy. Quality is our heritage.

Tamshell began in 1980, when John Hernandez and Art Pierce opened up a machine shop in South Los Angeles County, California.  Their passion for machining opened up big possibilities for their success which has culminated in what Tamshell has become today.

Over the decades, Tamshell has continued to grow and expand our operations. We’ve built trusted partnerships with companies from Aerospace & Defense to Oil & Gas sectors.

Today, as we prepare to expand our facilities and capabilities again, our Quality Promise has remained since day one.

Tamshell Precision Machining Logo Dark Blue

545 Monica Cir., Corona, CA 92878
Phone: (877) 826-7435

Tamshell Precision Machining Logo Dark Blue
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