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cannot remove screw to clean inside |
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qwertyjjj
Optics GrassHopper Joined: November/17/2010 Status: Offline Points: 7 |
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Posted: November/17/2010 at 11:32 |
I need to clean the lenses but am having trouble removing this screw to get inside the binoculars.
They are fairly old so am wondering if the metal is just weak, it keeps breaking when I try to unscrew it. Not sure whether it is the small eye lenses with dirt on them or the prism. http://www.sidekicker.net/a.jpg |
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Kickboxer
MODERATOR Moderator Joined: February/13/2008 Status: Offline Points: 23679 |
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Try a 3lb hammer...
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Opinion,untempered by fact,is ignorance.
There are some who do not fear death... for they are more afraid of not really living |
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supertool73
Optics God Superstool Joined: January/03/2008 Status: Offline Points: 11814 |
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Lifetime warranty and excellent customer service don't mean a thing when your gun fails during a zombie attack.
"A Liberal is a person who will give away everything they don't own." |
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Klamath
Optics Master Joined: May/20/2007 Location: United States Status: Offline Points: 1308 |
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You're kidding, right.
Stay the h#!! out of the inside of a binocular unless you know what you are doing, which you obviously don't.
I smell troll.
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Steve
"Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted". William Bruce Cameron |
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lucytuma
Optics Jedi Knight Joined: November/25/2007 Location: Wisconsin Status: Offline Points: 5389 |
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If do get inside, polishing with 400 grit sander paper and acetone for lubricant should put an end to your problems.
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"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not." - Thomas Jefferson
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300S&W
Optics God Joined: January/27/2008 Location: Burlington,WV Status: Offline Points: 10592 |
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OR just send them to Kickboxer.
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"I ain't got time to bleed!"
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qwertyjjj
Optics GrassHopper Joined: November/17/2010 Status: Offline Points: 7 |
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The dirt is on the inside so how else am I supposed to clean them? |
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qwertyjjj
Optics GrassHopper Joined: November/17/2010 Status: Offline Points: 7 |
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http://www.birdwatchersdigest.com/site/optics/cleaning_optics.aspx
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Bird Watcher
Optics Master Joined: August/30/2006 Status: Offline Points: 1523 |
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Perhaps you overlooked the most important sentence:
"The absolute safest option, especially if your model is not waterproof, is to send it to a professional to have it cleaned."
Here's a professional for you to contact:
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qwertyjjj
Optics GrassHopper Joined: November/17/2010 Status: Offline Points: 7 |
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Followed by:
However, this won't be cheap. In fact, it may actually cost more than your instrument is worth. What is the issue with opening it up? It's an old pair, I'd like to clean and do it myself. I already opened up the objectives and cleaned it, no issue, I just need to get the ocular open as that is the part with the dirt, which I can see move when I twist them round. |
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budperm
Optics Retard show me your sheep!! Joined: January/01/2009 Location: Pennsylvania Status: Offline Points: 31710 |
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Speaking as someone who used to service and clean Microscopes with 200-400X capability. Unless you are use a full laboratory clean room and very expensive lint free cleaning materials you will introduce hundreds of times more contaminates than you will remove trying to clean it yourself!!!
Unless your in love with them.... buy new! Otherwise send them back to factory but don't hold your breath... Edited by budperm - November/18/2010 at 13:58 |
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"Peace is that brief glorious moment in history when everybody stands around reloading".
--Thomas Jefferson |
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qwertyjjj
Optics GrassHopper Joined: November/17/2010 Status: Offline Points: 7 |
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There are big black dots in the oculars, it can;t get worse than that.
I appreciate the concern but I'm not going to pay for it for some 50 yr old binoculars when I can give it a go cleaning them or buy some new (and better) ones. So, any idea son how to open it when the screw seems to be damaged as in the picture? There is a screw at the other end but doesn;t seem to do much. |
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budperm
Optics Retard show me your sheep!! Joined: January/01/2009 Location: Pennsylvania Status: Offline Points: 31710 |
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Oy Yeh!!!
Why would you want t o be messing with the hinge joint. I thought you were trying to clean teh eye pieces ?!?!/ Please give up while your behind!
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"Peace is that brief glorious moment in history when everybody stands around reloading".
--Thomas Jefferson |
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Klamath
Optics Master Joined: May/20/2007 Location: United States Status: Offline Points: 1308 |
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Well, I guess you were serious after all, so I herby retract the troll comment.
If this is an old porro binocular, remove the screws from the faceplate. You generally get into the oculars that way. I admire the curiosity, but just be prepared to fubar them. Been there done that. It was an interesting experience, but I really don't know if I learned anything.
If the foreign material is fungus, be prepared to find it has etched the glass and there is no way to clean that.
Get what educational value there is, but be prepared to get a new binocular.
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Steve
"Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted". William Bruce Cameron |
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lucytuma
Optics Jedi Knight Joined: November/25/2007 Location: Wisconsin Status: Offline Points: 5389 |
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Good advise Steve.
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"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not." - Thomas Jefferson
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Bird Watcher
Optics Master Joined: August/30/2006 Status: Offline Points: 1523 |
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I tried the link that you provided, it does not work.
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qwertyjjj
Optics GrassHopper Joined: November/17/2010 Status: Offline Points: 7 |
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Any ideas on how to open it then?
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qwertyjjj
Optics GrassHopper Joined: November/17/2010 Status: Offline Points: 7 |
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On these, if I unscrew the screws on the faceplate, it looks like the oculars are secured on top of that though. On the left one, if I adjust the ocular focus, the dirt doesn;t move, on the right one it moves so does that mean the left one has the dirt inside or possibly on the prism? |
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Klamath
Optics Master Joined: May/20/2007 Location: United States Status: Offline Points: 1308 |
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OK, finally got you picture up. You may well have to loosen that center screw. Look for a small screw somewhere in the ocular that looks like it might attach the eyepiece to the tube coming up from the faceplate. If that comes out, you may have to get the screw in the picture out and the ocular assembly might lift free.
The problem is that the screw slot in the picture looks messed up beyond redemption. You may be able to refile a wider slot, not deeper, just wider. Going deeper gets you nowhere. Just wider till the small file just fits. Gently use the file as a handle to loosen the thing.
Now understand, I MAKE NO CLAIMS ABOUT KNOWING ANYTHING ABOUT BINOCULAR REPAIR.
Having said that I think you may have too much to handle there.
The moving spot is likely on a lens and the stationary spot is likely on the prism. If you succeed in getting to the prism assembly, that will take serious equipment and know how to disassemble, clean, and in particular to REASSEMBLE.
I'm now out of my depth. I wish you good luck. I also suggest (but you probably have already) that you do a Google search. You might find some sort of guide.
What make and model are these binoculars?
Edited by Klamath - November/20/2010 at 14:46 |
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Steve
"Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted". William Bruce Cameron |
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etudiant
Optics GrassHopper Joined: August/17/2009 Status: Offline Points: 40 |
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Hi quertyjjj,
Just came across this thread. If it helps, Deutsche Optik has Field Manuals that are helpful. http://www.deutscheoptik.com/catalog/product_info.php?cPath=21&products_id=78 http://www.deutscheoptik.com/catalog/product_info.php?cPath=21&products_id=80 Note that these show tools that you probably do not have. Also note that the position of the lenses relative to one another may be critical, so mark the edge of the optical assembly with a marker before taking anything apart. |
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