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Delaminating lenses ...fix? (Read 4376 times)

Cbashooter Frequent Elocutionist Offline Posts: 1634 Location: Eastern Wa. Joined: Mar 31^st, 2018	Delaminating lenses ...fix? May 20^th, 2022 at 8:06pm	Print Post
	Not visible through scope very much but I'm not thrilled to see this on a new purchase. Ideas on a fix ?


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moodyholler Oldtimer Offline Posts: 721 Location: Blue Ridge Joined: Oct 11^th, 2005	Re: Delaminating lenses ...fix? Reply #1 - May 20^th, 2022 at 8:34pm	Print Post
	Following!


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curdog Full Member Offline Posts: 116 Joined: Feb 26^th, 2022	Re: Delaminating lenses ...fix? Reply #2 - May 20^th, 2022 at 9:52pm	Print Post
	Time for a rebuild by the look of it. On the bright side, the adhesives used for lenses now will see us out for sure. It's not meant to break down like the old balsam gum.


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Cbashooter Frequent Elocutionist Offline Posts: 1634 Location: Eastern Wa. Joined: Mar 31^st, 2018	Re: Delaminating lenses ...fix? Reply #3 - May 20^th, 2022 at 10:29pm	Print Post
	Well I got off the phone with a friend of mine and on his advice I boiled some water and dipped the objective lens in the water after is cooled a bit and let it heat up and the lenses are fixed. Probably should have left it in a little longer as you were still a couple little streaks but I quit while I was ahead.
	« Last Edit: May 20^th, 2022 at 10:46pm by Cbashooter »

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Grumpy gumpy Full Member Offline Posts: 214 Location: australia Joined: Jul 6^th, 2016	Re: Delaminating lenses ...fix? Reply #4 - May 20^th, 2022 at 10:32pm	Print Post
	Did you take the lense out to do this? Gumpy


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Cbashooter Frequent Elocutionist Offline Posts: 1634 Location: Eastern Wa. Joined: Mar 31^st, 2018	Re: Delaminating lenses ...fix? Reply #5 - May 20^th, 2022 at 10:46pm	Print Post
	Grumpy gumpy wrote on May 20^th, 2022 at 10:32pm: Did you take the lense out to do this? Gumpy Nope quick dips ans wipes.
	« Last Edit: May 20^th, 2022 at 11:04pm by Cbashooter »

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bpjack Frequent Elocutionist Online Posts: 3815 Location: East Olympia, WA Joined: May 18^th, 2008	Re: Delaminating lenses ...fix? Reply #6 - May 20^th, 2022 at 11:12pm	Print Post
	I had a friend that said you could put the lens on a laboratory hot plate in a vacuum chamber. I have a suitable hot plate, but I must have misplaced my vacuum chamber. Jack

	People who think they know everything are a great annoyance to those of us who do.
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jfeldman ASSRA Board Member Offline Posts: 1120 Location: Imperial Beach, Ca Joined: Nov 5^th, 2005	Re: Delaminating lenses ...fix? Reply #7 - May 21^st, 2022 at 2:25pm	Print Post
	Wow! I never would have thought of that and probably would have never considered it, if I had thought of it!!! Dipping the scope into hot water seems very scary to me! Glad it worked for you and thanks for sharing. Regards, Joe


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Grumpy gumpy Full Member Offline Posts: 214 Location: australia Joined: Jul 6^th, 2016	Re: Delaminating lenses ...fix? Reply #8 - May 21^st, 2022 at 8:34pm	Print Post
	I’ve got a nice weaver 6x that has a delaminated lense inside it, I might take it out and see if I can fix this, nothing to loose if I kill it. Gumpy


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japcas Participating Member Offline Posts: 35 Location: Kingsport, TN Joined: Feb 19^th, 2022	Re: Delaminating lenses ...fix? Reply #9 - May 22^nd, 2022 at 10:28am	Print Post
	What kind of scope is this CBashooter? Any idea how old it is?


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condorsc Full Member Offline NRA Life/Benefactor, ASSRA, SCV Life Posts: 210 Location: Beaufort, S.C. Joined: Nov 13^th, 2021	Re: Delaminating lenses ...fix? Reply #10 - May 24^th, 2022 at 1:20am	Print Post
	bpjack wrote on May 20^th, 2022 at 11:12pm: I had a friend that said you could put the lens on a laboratory hot plate in a vacuum chamber. I have a suitable hot plate, but I must have misplaced my vacuum chamber. Jack I was a school-trained 41C20 in the Army(all scopes, binos, telescopes, rangefinders, BC scopes, artillery sights, etc.) That doesn't make me an expert, but herewith a comment or two. CURDOG is right, the old compound lenses were cemented together with Canadian Balsam. This was done in a little oven resembling a toaster oven. Judging by the scratches on the lens in the second pic it's new-to-you but not a new scope. If it's an expensive scope, you would be best off shipping it to Parsons or somebody, you don't have the wrenches and tools or knowledge to do it any good. If it's a lesser scope, have some fun and see what you can do with it.


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gnoahhh Frequent Elocutionist Offline Posts: 1069 Location: Gaithersburg, MD Joined: Mar 31^st, 2010	Re: Delaminating lenses ...fix? Reply #11 - May 24^th, 2022 at 8:12am	Print Post
	Sitting here wondering if this boiling water dip trick would be advantageous for lens that are simply getting foggy. I have a couple scopes like that which are still eminently usable, but.....


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Cbashooter Frequent Elocutionist Offline Posts: 1634 Location: Eastern Wa. Joined: Mar 31^st, 2018	Re: Delaminating lenses ...fix? Reply #12 - May 24^th, 2022 at 9:14am	Print Post
	If you go on vintage camera sites they fix them on hot plates. I had another scope that was ruined in other ways and heated the lens with a propane torch (held very far away) and the lens cleared up.as a test I let it keep heating after it cleared up and the lens cracked.


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Cbashooter Frequent Elocutionist Offline Posts: 1634 Location: Eastern Wa. Joined: Mar 31^st, 2018	Re: Delaminating lenses ...fix? Reply #13 - May 24^th, 2022 at 9:15am	Print Post
	japcas wrote on May 22^nd, 2022 at 10:28am: What kind of scope is this CBashooter? Any idea how old it is? Fecker 16x Champion


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rgchristensen Frequent Elocutionist Offline Posts: 1190 Joined: Jan 2^nd, 2014	Re: Delaminating lenses ...fix? Reply #14 - May 24^th, 2022 at 7:34pm	Print Post
	Feckers are amongst the finest of rifle-scopes. Well worth professional care. CHRIS


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