Application note DM007, titled “Accuracy of Surface Finish of Single Point Diamond Turned Materials,” has been released by Precision-Optical Engineering. Downloadable from the Technical Library section of the company’s Web site, it features a table that shows typical surface finish values for IR materials and aerospace aluminum alloys. The data sheet notes that these values should be achievable using good quality diamond turning or diamond fly-cutting lathes for component manufacturing. It is designed to be read in conjunction with data sheet DM006, which discusses how the values can be reached.