Edge Blackening Manufacture Capability Spherical Lenses Molded Optics Flatwork Vacuum Coating Fine Cementing Edge Blackening Sub Assembly Mechanics Edge Blackening *From thin build-up to high-grade decorative lacquering. *Optical cleaning by acetone is available to DDO offered epoxy lacquering. *Dimensional tolerance +/-0.05mm for Silk-screen lacquering. *Diameter tolerance +/-0.05mm conditionally for Aperture lacquering. Tempon print Aperture Lacquering Silk-screen Tampo Printing