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front lense is stained, from the inside |
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lexmark
Optics Apprentice Joined: January/29/2009 Status: Offline Points: 64 |
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Posted: February/10/2009 at 10:00 |
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My second hand bushnell banner has finally arrived but the front lense is stained with an oily substance, is there any way I can remove the front lense for cleaning?
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HOLLOWPOINT
Optics Apprentice Joined: November/24/2007 Location: Germany Status: Offline Points: 79 |
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That may very well be some kind of lubricant which found its way inside your riflescope.
Worst case scenario: fungal infestation
Not without considerable mechanical skills. On top of that, the nitrogen filling (IF there's any left) which prevents fogging, will be gone when you open the scope.
It's only a Banner.
Throw it away and buy a better scope!
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Independence is my happiness, and I view things as they are, without regard to place or person; my country is the world, and my religion is to do good. Thomas Paine
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lexmark
Optics Apprentice Joined: January/29/2009 Status: Offline Points: 64 |
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haha ya I really should throw it out but its good enough for a .22, i guess i'll leave it alone
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cyborg
Optics God Gaseous Clay Joined: August/24/2007 Location: North Georgia Status: Offline Points: 12288 |
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Here's the deal.
1) You can send it to Bushnell and then they can fix it, and you will pay whatever it will cost, they may even upgrade you at a discounted cost.
2) You can try to repair it yourself. It's really not that difficult to do. The nitrogen can be repurged by going and filling an airtank at a truckstop that uses nitrogen for tire inflation. There are several that do use nitrogen. Remove the screw for the purging port and compress the air 5 times. Each time let the air out, the fifth time you will have 99.9% nitrogen in the scope. Note that getting the lens back into the perfect focus is a pain and takes patience. This has to be done before the purging. Also the type of cleaner you use is critical. It must be coating safe.
I would call Bushnell and inquire first. If nothing else then you can attempt this and possibly save from throwing it away.
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An armed public are citizens. A disarmed public are subjects. OATH KEEPER #8233 Support us, and join our cause. Cyborg |
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