Tech Specifications

Technical Specifications for Micro Laser Cutting
Axis travel (foil size) 730×610 mm (29” x 24″) Material thickness capability up to 5 mm
Resolution 0.01 Microns up to 0.6 mm
Repeatability 2.5 Microns
Aspect Ratio 1:0.8 material thickness
Minimum distance between openings: 0.0006” (15 Microns) depending on metal thickness

The PCM process
enables the production of parts with complex geometric shapes, without necessitating large tooling costs for small prototype runs. Chemograf produces metal parts in thicknesses ranging from 0.025 mm (0.001”) to 1.5 mm (0.06”) and in a wide selection of metal alloys

Because of the nature of the etching process and the undercutting at the edges of the resist patterns on the surface, all dimensions, tolerances and configurations are functions of the thickness of the stock being etched, the material, and to a lesser extent, the process variables. In the section on tolerances and materials that follows, tolerances are given for a variety of metals, thicknesses, overall pattern sizes, etc. These are generally applicable to equipment, processes, metals and configurations currently being used. They do not, however, express the ultimate capabilities of photochemical machining.

Metal Thickness
Metal0.05 (0.002″)0.2 (0.008″)0.5 (0.02″)0.8 (0.03″)1 (0.04″)1.5 (0.06″)Tolerance ±
Stainless Steel0.0150.030.080.1  

Relationship of beval to matel thickness:
An etched equally from two sides, a bevel is produced.
As a general rule, this bevel is approximately 10% to 20% of material thickness (T).
Inner and outer corner radius (R)
Minimum inner radius = 75%T
Minimum outer radius = 50%T

1. Double-side etching
A=10% to 15%T

2. Single-side etching
A=20% to 40%T

Relationship of hole size to matel thickness:
As a general rule, it is normally stated that the
diameter of a hole cannot be less then the matel thickness.
This relationship however, does very as the matel thickness changes.
thicknesses (t)practica

Center-To-Center Dimensions
Generally speaking, for small pieces, it is possible to etch Photo Chemically Machined parts which will tend to duplicate the center-to-center dimensions which exist on production artwork.
Because of limitations in rhe area of artwork. preparation, the following table IV gives practical center-to-center dimensions tolerances for finished parts.
Most of the tolerance is used up on material shifts in the etching process.