archibald Posted September 1, 2006 Report Share Posted September 1, 2006 I know this has been covered, but I can't find the thread at either board: I have a non AR sapphire crystal and a non-AR sapphire cyclops. Should I have the crystal AR coated before or after I put on the cyclops? Or should I have them AR coated separately? Thanks guys... Quote Link to comment Share on other sites More sharing options...
Finepics Posted September 1, 2006 Report Share Posted September 1, 2006 I know this has been covered, but I can't find the thread at either board: I have a non AR sapphire crystal and a non-AR sapphire cyclops. Should I have the crystal AR coated before or after I put on the cyclops? Or should I have them AR coated separately? Thanks guys... Coat them together after the cyclops is fixed to the crystal - it's much easier and much better that way. Quote Link to comment Share on other sites More sharing options...
Pugwash Posted September 1, 2006 Report Share Posted September 1, 2006 Would it not be easier to just coat the inside or doesn't that work? Quote Link to comment Share on other sites More sharing options...
archibald Posted September 1, 2006 Author Report Share Posted September 1, 2006 Would it not be easier to just coat the inside or doesn't that work? It's a PAM so it would mean coating the outside--but that's not a bad idea if the AR is durable enough. Any idea if it would be too easily scratched? Quote Link to comment Share on other sites More sharing options...
Linder Posted September 1, 2006 Report Share Posted September 1, 2006 If you do coat the outside, make sure it is coated after the installation of the cyclops. Otherwise you will get visible rings beneath the cyclops. ^^^^ from what I recall of previous discussion. Quote Link to comment Share on other sites More sharing options...
Finepics Posted September 2, 2006 Report Share Posted September 2, 2006 If you do coat the outside, make sure it is coated after the installation of the cyclops. Otherwise you will get visible rings beneath the cyclops. ^^^^ from what I recall of previous discussion. Not true - PAM's are only coated on the inside and a standard Mag Flouride coat will eventually scratch and wear off. You will get Newtons rings when you coat a sapphire crystal with a glass cyclops as the coating recipe for sapphire is not compatible with glass. Another reason to coat after attaching the sapphire cyclops is because the glue that holds it on will not works as well if the crystal is coated first. All of mine will have the new cyclops fixed then AR'd on the inside only. Quote Link to comment Share on other sites More sharing options...
Linder Posted September 2, 2006 Report Share Posted September 2, 2006 So gen PAMs are like gen Pateks and Vacheron Constantins. AR coat on the inside surface only? Quote Link to comment Share on other sites More sharing options...
archibald Posted September 2, 2006 Author Report Share Posted September 2, 2006 Not true - PAM's are only coated on the inside and a standard Mag Flouride coat will eventually scratch and wear off. You will get Newtons rings when you coat a sapphire crystal with a glass cyclops as the coating recipe for sapphire is not compatible with glass. Another reason to coat after attaching the sapphire cyclops is because the glue that holds it on will not works as well if the crystal is coated first. All of mine will have the new cyclops fixed then AR'd on the inside only. Thanks, finepics...maybe I'll just send it to you! Quote Link to comment Share on other sites More sharing options...
HauteHippie Posted September 2, 2006 Report Share Posted September 2, 2006 It's a PAM so it would mean coating the outside--but that's not a bad idea if the AR is durable enough. Any idea if it would be too easily scratched? Don't coat the outside. The AR coating on my glasses lasts about a year before I need to redo it - no matter how much I baby them with the special cloths, etc... And I only wear them at night after taking the contacts out. AR coating is very undurable. Inside only!!! Quote Link to comment Share on other sites More sharing options...
TK471 Posted October 11, 2006 Report Share Posted October 11, 2006 Found this thread with a search. I'm contemplating buying a new crystal with upgraded cyclops from Davidsen, which don't come with AR coating. What are the advantages of the coating? IN other words, what performance am I giving up by trading my current AR coated crystal? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.