More than 40 years of experience
We have over four decades of experience in manufacturing photochemically etched components for the military and aerospace markets. Optical encoders, lead frame prototypes, and R/F shielding components are some of the common photochemically machined products that we manufacture. Elcon specializes in processing diverse base materials, including molybdenum, tungsten, copper, stainless steel, and titanium, with thicknesses ranging from 0.0005" to 0.100".
Technical designs for your projects are created by our CAD/CAM department. Using Optibeam printers, photographic artwork designed from custom specifications are plotted on to photoresists that preserve surface metal during photo etching. After the imaging phase, we use Chemcut etchers to remove undesired areas from metal surfaces. Our photochemical etching process offers several advantages, including low cost tooling, design flexibility, fast turnaround, and dimensional repeatability.
Flat as well as 3D curved surfaces can be precisely etched to tight tolerances of up to 0.00025". Through chemical milling, we accurately etch holes and slots on a wide range of materials. The minimum hole diameter and spacing between holes can be 1.2 times the material thickness. Our average lead time is 3 weeks ARM for planar and 8 weeks ARM for 3D Grids. Expediting services are also available.
Wide range of Exotic Materials Available
Ability to Etch More Precise Geometry
Cost Effective Prototypes
Dry Film and Liquid Resist
Capability to Produce Fine Geometries
Design Guide for Photochemical Machining
|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"
|Double Shear||.005" to .015"
.016" to .031"
Part after process
Elcon has been known for its advanced photochemical machining process since 1967. We are able to produce even extremely difficult requirements by tightly controlling every aspect of the process.