SJC Precision, Inc.

Milpitas machine shop in business since 1996, offering CNC machining, jigs and fixtures, tool and die and sheet metal fabrication.

Capabilities

• CNC machining
• Jigs and fixtures
• Tool and die
• Sheet metal fabrication
• Design support
• Inspection and first article reports

Quality & certifications

ISO 9001:2015, ITAR registered (as stated on site).

Request a quote

To request a quote from this shop, use the Request a Quote form. Tell us the part, material, quantity and deadline, and we will pass your request to the shop.

Jigs, Fixtures and Tool and Die Work in Milpitas with SJC Precision

Behind most finished products is a set of tools nobody sees: the jigs that guide a drill, the fixtures that hold a part, and the dies that shape metal. SJC Precision, Inc. is a Milpitas machine shop listed here as in business since 1996, offering CNC machining, jigs and fixtures, tool and die, sheet metal fabrication, design support, and inspection with first article reports. This page explains what these tools do and how to prepare a request for jigs, fixtures and tool and die work in Milpitas.

Jigs versus fixtures

The two words are often mixed up. A jig guides a tool, such as a plate that sets where each hole gets drilled. A fixture holds a part in a fixed position while something is done to it, such as machining, welding or measuring. Both exist to make results repeatable, so ten parts come out the same as one. They matter most when a product is made more than once.

Tool and die

Tool and die work makes the dies and tooling used to cut or form sheet metal and other materials. A die stamps or shapes a part when pressed. Tooling like this is a larger investment than a single machined part, and it pays off when the same shape is made in large numbers. Describe the part you want to form, the material and thickness, and the quantity you expect.

Sheet metal and CNC machining

Sheet metal fabrication cuts, bends and joins thin metal into panels and enclosures. CNC machining makes precise parts from solid stock. Fixtures and tools often use both, such as a machined base plate with sheet metal covers. The listing names both processes, so a mixed project can be discussed in one request.

Design support

The listing mentions design support. A buyer who knows the problem but not the best solution can describe how the part will be used and ask for ideas. Good fixture design considers how a worker loads the part, how it is clamped, how swarf or debris escapes and how the fixture will be cleaned. Share photos of the process and the parts involved.

Inspection and first article reports

A first article report documents the measurements of the first finished part, compared with the drawing. It is a check that the setup is right. The listing notes inspection and first article reports, so ask for one if your program needs it. Say which features to measure.

Quality listing

The listing shows ISO 9001:2015 and ITAR registration, as stated on the shop’s site. If your work falls under ITAR, tell the shop early so documents are handled the right way. Whether your project qualifies is for your own compliance team to decide.

Information to include in a request

• Drawings or sketches of the part and the operation
• Material and thickness for formed parts
• Expected quantity and production rate
• Any critical dimensions or datums
• Inspection or report requirements
• Finish
• Delivery date

Why build tooling locally

Tooling often needs trial and adjustment. A Milpitas shop is close to many Silicon Valley assembly floors, so trials, tweaks and pickups take less time than shipping from far away.

Questions to ask about tooling jobs

Tooling is often a one-time purchase, so it is worth asking how it will be maintained. Ask how long the tool is expected to last, what wear parts may need replacing, and whether the shop keeps the design files. Also ask what trial parts will be run to prove the tool works before it goes to the floor. Clear expectations on these points make the first production run much smoother.

To get started, Request a Quote through Machining Marketplace and we will pass your request to SJC Precision.

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