At FET Engineering, Inc., we are a progressive, intelligent provider of sophisticated jigs and fixtures for many industrial markets. Involved from the initial planning stages, we manufactured the check fixture highlighted here for a client in the automotive industry. This large scale fixture contained many complex elements for dimensional measurement of the intricate details on the lower geometry of grille radiator. Design elements included removable blocks as well as more than 30 labeled datum locations.

We milled the components from several materials, including steel, aluminum, Bakelite, and a urethane modeling material that would allow us to achieve exceptional dimensional accuracy. With extreme attention to the finest details, we assembled all of the components into a fixture with overall dimensions of 1,620 mm in length x 440 mm in width x 530 mm in height. We utilized high resolution CMM measurements to validate that we upheld the required ± 0.1 mm tolerances on the datum locations and ±.0.2 mm on the scribe lines and offset surfaces.

Within a ten week timeframe, we produced one of these fixtures with structural and dimensional integrity to last the entire 6-10 year expected lifespan of the vehicle platform. Annual calibrations ensure continued reliability.

If you are interested in learning more about this project or the processes we used to complete it, contact us directly.

CNC Milling of a Grille Radiator Lower Check Fixture Project Details

Product Name

Grille Radiator Lower Check Fixture

Product Description

Check Fixture for dimensional measurement and quality check

Capabilities Applied/Processes

CNC Milling

Equipment Used to Manufacture Part

Mills & CMM Machine

Overall Part Dimensions

1620 x 440 x 530 mm (64″ x 20″ x 21″)
Weight: 44 kg (97 lbs.)

Tightest Tolerances

+/- 0.1 mm on Datums, +/- 0.2 mm on Scribe-Lines & Offset Surfaces

Material Used

RenShape (Urethane Modeling Material)
Bakelite (Phenol Resin)


In process testing/inspection performed

CMM Machine

Industry for Use



We made 1 of these fixtures. It will be used for the lifespan of the vehicle platform (6-10 years) & it should be calibrated annually.

Delivery/Turnaround Time

10 weeks

Delivery Location

Texas, USA

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