Engineered Surface Finishes acquired by Cabot Microelectronics Corporation, the world's leading supplier of chemical mechanical planarization (CMP) polishing slurries to the semiconductor industry. The acquisition builds on the company's nanoscale surface finishing technology, metrology and consulting services offered by its Engineered Surface Finishes group.
Leveraging a large portfolio of patents and the expertise of 150 scientists and engineers, the team at Surface Finishes now has enhanced state-of-the-art polishing and finishing capabilities for a wider range of materials.
Reference Cubes with a squareness of 0.2 arc seconds
Reference Cubes with a squareness of 0.2 arc seconds
Using lapping, optical polishing, single point diamond machining, low stress grinding and honing, Surface Finishes provides Angstrom level tolerances on prototype or production components such as: mirrors for optical imaging and scanning, air bearings, optical disc molds, large area reference surfaces and custom gauging.
Since 1949, Surface Finishes has pioneered precision lapping, grinding and optical polishing techniques specializing in flat, cylindrical, perpendicular and parallel surfaces with extremely demanding geometry.
With half a century of experience, free engineering advice on tolerances and expert hand craftsmanship, we have consistently produced results for our customers that others only hope to achieve.
E-Mail your drawings for a comprehensive quote!
Diamond machining is a process in which a single point diamond is used as a cutting tool, in a fly cut or turning operation. The process takes place with equipment using highly accurate gas bearings in the linear and radial axis. Diamond machining would be an efficient alternative method of producing aluminum mirrors over optical polishing.

The cutting forces are very small because of single point contact as well as a small, accurately controlled depth of cut. Very low stress is introduced into the work piece.

Optical quality components including mirrors are produced with typical surface roughness less than 100 angstroms (0.3 micro inch).
Sizes and dimensions can be held to much closer tolerance than conventional machining or grinding processes because of the accuracy of the air bearing slides and spindle.
Very good quality and excellent repeatability of surface finish on most soft nonferrous materials. Aluminum alloys from 2024 to 7075, copper, brass, PVC, acrylics.

Contact info:
Surface Finishes
Cabot Microelectronics Polishing Corporation
39 Official Road
Addison, IL 60101-4592
 

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