Mechanical

Chemical Etching for Precision Metal Parts

  • Wide variety of alloys
  • Forming, heat treating, plating and other finishing services available
Photochemical machining is exceptionally well suited to producing mechanical components such as shims, spacers, gaskets, pointers, dials, clips, diaphragms, springs, pressure membranes, flexures and many other applications.

Metal parts with complex geometries (odd shapes, lots of holes, etc) are often far more cost effective to produce by photo etching than by stamping, punching; laser, plasma or waterjet cutting; or wire EDM.

Phototools typically cost less than $300 and take less than 2 days to produce compared to thousands or tens of thousands of dollars and weeks to months for stamping dies.

In photochemical etching, the part “emerges” from the metal all at once as the etching solution simultaneously processes through all unmasked areas of the plate.  CNC punching, laser and EDM affect only a small localized area at a time and the more complex the part, the more time it takes.

From the simplest geometries to the most complex, metal etching is a very cost effective solution for precision metal parts.

In photo etching, dimensional tolerances can be held as close as +/- 15% of the material thickness.  Locational tolerances are to drawing nominals because there is no tool wear and the phototool is created directly from CAD data.

Conard produces photoetched metal parts up to 24″ x 60″ in size.

Examples of precision shims for CPU applications


Miniature flexures, tabbed for automated assembly

Etched to precise depth, rupture discs
protect pressurized equipment


Linkage

Adjustable stainless steel strap


Stainless steel shaft locking washers

Stainless steel flange gasket
Etched and formed micro switch actuator springs

CNC Machine Tool Alignment Template

Stainless Steel Encoders 1/10 of an inch in diameter


Encoder discs of Aluminum, Brass, Phosphor Bronze and Beryllium Copper

Laser Printer Toner Cartridge Components