PCM Design Guidelines

Photochemical Machining Design Guidelines

Some limitations on Design of Chemical Etching, Dimension & Tolerances are Required.

Inside Radius = Metal Thickness
Outside Radius = 75% of Metal Thickness
Hole Diameter & Slot = 100% Metal Thickness
Space Between Holes = Metal Thickness
Bevel (B) = 5% to 10% of Metal Thickness
Half Etch = 50% to 75% of Metal Thickness
Partial Etch = 25% to 35% of Metal Thickness

Typical Tolerance From +/- .0005" to .010" Depend of Metal Thickness.

There are some process that removes parts from sheet (Shear, Outboard Tab, and Recess Tab). Special for shear, the length tolerances are required minimum.

Single Shear Metal Thickness
.005" to .015"
.016" to .031"
Minimum Tolerance
+/- .003"
+/- .005"
Double Shear .005" to .015"
.016" to .031"
+/- .002"
+/- .003"

Part after process

Side Etch and Over Etch
Before and After Etch

Other Services

Photochemical Machining

We have over four decades of experience in manufacturing photochemically etched components for the military and aerospace markets.

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Metallization of Ceramics

Elcon uses proprietary technology to provide industry leading metallized ceramics and sapphires.

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Brazed Assembly

Elcon has been producing some of the most challenging brazed assemblies for over 30 years.

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Elcon Precision LLC is committed in achieving customer satisfaction by providing our customers with highest quality products and services.

Elcon Precision LLC | Photochemical Machining | Metallization | Brazing
With more than 40 years of experience, Elcon Precision LLC is a trusted service provider of Metallized and Resistive Coated Ceramics, Vacuum and Atmosphere Brazed Assemblies, and Photochemically Machined Parts.

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408-292-7800

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