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Thought I'd just posted a reply, but it doesn't seem to have registered on the forum. To repeat: Optical Coating Associates mentioned a rough figure of $800 to re coat my 20", plus a small extra charge for stripping off the old coatings. At this distance I need piece of mind when paying the huge shipping costs to get a re coat. Bottom line? These coatings by this company seem relatively untested & unkown in the amateur community. & offer an improved reflectivity which one might never be able to discern. C Qin seems to have lots of happy clients and there's enough experience based negative comment out there to give me grave reservations about dialectric coatings. If living in Oz, I might not care. But with my shipping costs I don't want any early coating failures!
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